<!DOCTYPE html>
<html class="h-100" data-bs-theme="light" data-mantine-color-scheme="light" lang="en" prefix="og: https://ogp.me/ns#">
<head>
<meta content="width=device-width, initial-scale=1.0" name="viewport">
<meta content="IE=Edge" http-equiv="X-UA-Compatible">
<link crossorigin="true" href="https://cdn.hexlet.io" rel="preconnect">
<meta content="aa2vrdtq64dub8knuf83lwywit311w" name="facebook-domain-verification">
<link href="/favicon.ico" rel="icon" sizes="any">
<link href="/favicon.svg" rel="icon" type="image/svg+xml">
<link href="/apple-touch-icon.png" rel="apple-touch-icon">
<link href="/manifest.webmanifest" rel="manifest">
<script>
//<![CDATA[
window.gon={};gon.ym_counter="25559621";gon.is_bot=true;gon.applications={};gon.current_user={"id":null,"last_viewed_notification_id":null,"email":null,"state":null,"first_name":"","last_name":"","current_program":null,"current_team":null,"full_name":"","guest":true,"can_use_paid_features":false,"is_hexlet_employee":false,"sanitized_phone_number":"","can_subscribe":true,"can_renew_education":false};gon.token="PPyr4VahJYjjz4jCExI-X9GeB7xF8DJSJDEyDl9A35hvOsbXd8oeaITFdyqhjAme3TSJ54nuKF6GtPgdEpwAQw";gon.locale="en";gon.language="en";gon.theme="light";gon.rails_env="production";gon.mobile=false;gon.google={"analytics_key":"UA-1360700-51","optimize_key":"GTM-5QDVFPF"};gon.captcha={"google_v3_site_key":"6LenGbgZAAAAAM7HbrDbn5JlizCSzPcS767c9vaY","yandex_site_key":"ysc1_Vyob5ZPPUdPBsu0ykt8bVFdzsfpoVjQChLGl2b4g19647a89","verification_failed":null};gon.social_signin=false;gon.typoreporter_google_form_id="1FAIpQLScNwxM8rjQRRWqW5G6dn6-0NvLUblFemy7EvA9VsJ7Ov5wXqA";
//]]>
</script>
<meta charset="utf-8">
<title>Course «SASS: Fundamentals of Operations»: online education</title>
<meta name="description" content="Take the SASS: Fundamentals of Operations course at the Hexlet online school. Experienced mentors, practice on simulators, open-source projects in your portfolio. Individual and group online learning at Hexlet.">
<link rel="canonical" href="https://hexlet.io/courses/css-sass">
<meta property="og:description" content="Take the SASS: Fundamentals of Operations course at the Hexlet online school. Experienced mentors, practice on simulators, open-source projects in your portfolio. Individual and group online learning at Hexlet.
">
<meta property="og:title" content="Course «SASS: Fundamentals of Operations»: online education
">
<meta property="og:url" content="https://hexlet.io/courses/css-sass">
<meta name="csrf-param" content="authenticity_token" />
<meta name="csrf-token" content="_vH06Q2_L2J1bqAPXBps1FbvZ3kmF6EivKL1UgcZGGqtN5nfLNQUghJkX-fuhFsVWkXpIuoJuy4eJz9BSsXHsQ" />
<script src="/vite/assets/inertia-CgrHVkgd.js" crossorigin="anonymous" type="module"></script><link rel="modulepreload" href="/vite/assets/chunk-DsPFFUou.js" as="script" crossorigin="anonymous">
<link rel="modulepreload" href="/vite/assets/preload-helper-C1cfMHAs.js" as="script" crossorigin="anonymous">
<link rel="modulepreload" href="/vite/assets/init-0bhwJkNI.js" as="script" crossorigin="anonymous">
<link rel="modulepreload" href="/vite/assets/ahoy-BXKrsWjp.js" as="script" crossorigin="anonymous">
<link rel="modulepreload" href="/vite/assets/analytics-Du9ljYPK.js" as="script" crossorigin="anonymous">
<link rel="modulepreload" href="/vite/assets/ErrorFallbackBlock-V3hfk_CP.js" as="script" crossorigin="anonymous">
<link rel="modulepreload" href="/vite/assets/RootLayout-CUZzAr0T.js" as="script" crossorigin="anonymous">
<link rel="modulepreload" href="/vite/assets/Surface-DbDKujDz.js" as="script" crossorigin="anonymous">
<link rel="modulepreload" href="/vite/assets/gon-B-jV56Ol.js" as="script" crossorigin="anonymous">
<link rel="modulepreload" href="/vite/assets/mantine-DOJkeu70.js" as="script" crossorigin="anonymous">
<link rel="modulepreload" href="/vite/assets/utils-ClTF9s_T.js" as="script" crossorigin="anonymous">
<link rel="modulepreload" href="/vite/assets/routes-mvvEXZQ8.js" as="script" crossorigin="anonymous">
<link rel="modulepreload" href="/vite/assets/index.esm-DATLpQdV.js" as="script" crossorigin="anonymous">
<link rel="modulepreload" href="/vite/assets/Modal-BhY0AP_c.js" as="script" crossorigin="anonymous">
<link rel="modulepreload" href="/vite/assets/Textarea-P1s4q94S.js" as="script" crossorigin="anonymous">
<link rel="modulepreload" href="/vite/assets/exports-BsSGGK2I.js" as="script" crossorigin="anonymous">
<link rel="modulepreload" href="/vite/assets/dayjs.min-Bfba02I7.js" as="script" crossorigin="anonymous">
<link rel="modulepreload" href="/vite/assets/client-CYyKzrjQ.js" as="script" crossorigin="anonymous">
<link rel="modulepreload" href="/vite/assets/react-dom-SJZekO2j.js" as="script" crossorigin="anonymous">
<link rel="modulepreload" href="/vite/assets/useTranslation-bo78L81P.js" as="script" crossorigin="anonymous">
<link rel="modulepreload" href="/vite/assets/compiler-runtime-BhqaZ6vG.js" as="script" crossorigin="anonymous">
<link rel="modulepreload" href="/vite/assets/jsx-runtime-DlXMvSuQ.js" as="script" crossorigin="anonymous">
<link rel="modulepreload" href="/vite/assets/react-CFtMU8gd.js" as="script" crossorigin="anonymous">
<link rel="stylesheet" href="/vite/assets/application-BhDYOUva.css" />
<script src="/vite/assets/application-ZyVHkzwO.js" crossorigin="anonymous" type="module"></script><link rel="modulepreload" href="/vite/assets/chunk-DsPFFUou.js" as="script" crossorigin="anonymous">
<link rel="modulepreload" href="/vite/assets/autocomplete-BokUl44d.js" as="script" crossorigin="anonymous">
<link rel="modulepreload" href="/vite/assets/routes-mvvEXZQ8.js" as="script" crossorigin="anonymous">
<link rel="modulepreload" href="/vite/assets/createPopper-gQnwoPhY.js" as="script" crossorigin="anonymous">
<link rel="modulepreload" href="/vite/assets/js.cookie-CB1F2-VC.js" as="script" crossorigin="anonymous"><link rel="stylesheet" href="/vite/assets/application-BhDYOUva.css" media="screen" />
<!-- Google Tag Manager - deferred -->
<script>
// dataLayer stub сразу — пуши работают до загрузки скрипта
window.dataLayer = window.dataLayer || [];
// Сам скрипт — отложенно после load
window.addEventListener('load', function() {
setTimeout(function() {
dataLayer.push({'gtm.start': new Date().getTime(), event: 'gtm.js'});
var j = document.createElement('script');
j.async = true;
j.src = 'https://www.googletagmanager.com/gtm.js?id=GTM-WK88TH';
document.head.appendChild(j);
}, 1500);
});
</script>
<!-- End Google Tag Manager -->
</head>
<body>
<!-- Google Tag Manager (noscript) -->
<noscript>
<iframe height="0" src="https://www.googletagmanager.com/ns.html?id=GTM-WK88TH" style="display:none;visibility:hidden" width="0"></iframe>
</noscript>
<!-- End Google Tag Manager (noscript) -->
<header class="sticky-top bg-body">
<nav class="navbar navbar-expand-lg">
<div class="container-xxl">
<a class="navbar-brand" href="/"><img alt="Hexlet logo" height="24" src="https://hexlet.io/vite/assets/logo_en_light-FS-yL6XB.svg" width="96">
</a><button aria-controls="collapsable" aria-expanded="false" aria-label="Menu" class="navbar-toggler border-0 mb-0 mt-1" data-bs-target="#collapsable" data-bs-toggle="collapse">
<span class="navbar-toggler-icon"></span>
</button>
<div class="collapse navbar-collapse" id="collapsable">
<ul class="navbar-nav mb-lg-0 mt-lg-1">
<li class="nav-item dropdown">
<button aria-haspopup class="btn nav-link" data-bs-toggle="dropdown" type="button">
All courses
<span class="bi bi-chevron-down align-middle ms-1"></span>
</button>
<ul class="dropdown-menu">
<li>
<a class="dropdown-item d-flex py-2" href="/courses"><div class="fw-bold me-auto">Everything</div>
<div class="text-muted">8</div>
</a></li>
<li>
<hr class="dropdown-divider">
</li>
<li class="dropdown-item">
<b>Popular categories</b>
</li>
<li>
<a class="dropdown-item py-2" href="/courses_backend-development">Backend Development
</a></li>
<li>
<a class="dropdown-item py-2" href="/courses_devops">DevOps
</a></li>
<li>
<a class="dropdown-item py-2" href="/courses_frontend-development">Frontend Development
</a></li>
<li>
<a class="dropdown-item py-2" href="/courses_testing">Testing
</a></li>
<li>
<hr class="dropdown-divider">
</li>
<li class="dropdown-item">
<b>Popular courses</b>
</li>
<li>
<a class="dropdown-item py-2" href="/programs/frontend">Frontend Developer
</a></li>
</ul>
</li>
<li class="nav-item dropdown">
<button aria-haspopup class="btn nav-link" data-bs-toggle="dropdown" type="button">
About Hexlet
<span class="bi bi-chevron-down align-middle"></span>
</button>
<ul class="dropdown-menu bg-body">
<li>
<a class="dropdown-item py-2" href="/pages/about">About company
</a></li>
<li>
<a class="dropdown-item py-2" href="/blog">Blog
</a></li>
<li>
<span class="dropdown-item py-2 external-link" data-href="https://special.hexlet.io/hse-research" role="button"><span class="translation_missing" title="translation missing: en.layouts.header.results">Results</span>
</span></li>
<li>
<span class="dropdown-item py-2 external-link" data-href="https://career.hexlet.io" role="button"><span class="translation_missing" title="translation missing: en.layouts.header.career">Career</span>
</span></li>
<li>
<a class="dropdown-item py-2" href="/testimonials">Testimonials
</a></li>
<li>
<span class="dropdown-item py-2 external-link" data-href="https://t.me/hexlet_help_bot" role="button"><span class="translation_missing" title="translation missing: en.layouts.header.support">Support</span>
</span></li>
<li>
<span class="dropdown-item py-2 external-link" data-href="https://special.hexlet.io/referal-program/?promo_creative=priglasite-druzei&promo_name=referal-program&promo_position=promo_position&promo_start=010724&promo_type=link" role="button"><span class="translation_missing" title="translation missing: en.layouts.header.referal_program">Referal Program</span>
</span></li>
<li>
<span class="dropdown-item py-2 external-link" data-href="https://special.hexlet.io/certificate" role="button"><span class="translation_missing" title="translation missing: en.layouts.header.certificates">Certificates</span>
</span></li>
<li>
<span class="dropdown-item py-2 external-link" data-href="https://hh.ru/employer/4307094" role="button"><span class="translation_missing" title="translation missing: en.layouts.header.vacancies">Vacancies</span>
</span></li>
<li>
<span class="dropdown-item d-flex external-link" rel="noopener noreferrer nofollow" data-href="https://b2b.hexlet.io" data-target="_blank" role="button"><span class="translation_missing" title="translation missing: en.layouts.header.teams">Teams</span>
</span></li>
<li>
<span class="dropdown-item d-flex external-link" rel="noopener noreferrer nofollow" data-href="https://hexly.ru/" data-target="_blank" role="button"><span class="translation_missing" title="translation missing: en.layouts.header.college">College</span>
</span></li>
<li>
<span class="dropdown-item d-flex external-link" rel="noopener noreferrer nofollow" data-href="https://hexlyschool.ru/" data-target="_blank" role="button"><span class="translation_missing" title="translation missing: en.layouts.header.private_school">Private School</span>
</span></li>
</ul>
</li>
</ul>
<ul class="navbar-nav flex-lg-row align-items-lg-center gap-2 ms-auto">
<li>
<a class="nav-link" aria-label="Switch theme" href="/theme/switch?new_theme=dark"><span aria-hidden="true" class="bi bi-moon"></span>
</a></li>
<li>
<span data-target="_self" class="nav-link external-link" data-href="/u/new" role="button"><span>Sign up</span>
</span></li>
<li>
<span data-target="_self" class="nav-link external-link" data-href="https://hexlet.io/session/new" role="button"><span>Sign in</span>
</span></li>
</ul>
</div>
</div>
</nav>
</header>
<div class="x-container-xxxl">
</div>
<main class="mb-6 min-vh-100 h-100">
<link rel="preload" as="image" href="https://hexlet.io/rails/active_storage/representations/proxy/eyJfcmFpbHMiOnsiZGF0YSI6NzU1MCwicHVyIjoiYmxvYl9pZCJ9fQ==--f14a49ff502f979b417ab7b933968787a7db9620/eyJfcmFpbHMiOnsiZGF0YSI6eyJmb3JtYXQiOiJwbmciLCJyZXNpemVfdG9fZmlsbCI6WzYwMCw0MDBdfSwicHVyIjoidmFyaWF0aW9uIn19--6067466c2912ca31a17eddee04b8cf2a38c6ad17/image.png"/><div id="app" data-page="{"component":"web/courses/show","props":{"errors":{},"locale":"en","language":"en","httpsHost":"https://hexlet.io","host":"hexlet.io","colorScheme":"light","auth":{"user":{"id":null,"last_viewed_notification_id":null,"email":null,"state":null,"first_name":"","last_name":"","current_program":null,"current_team":null,"full_name":"","guest":true,"can_use_paid_features":false,"is_hexlet_employee":false,"sanitized_phone_number":"","can_subscribe":true,"can_renew_education":false}},"cloudflareTurnstileSiteKey":"0x4AAAAAAA15KmeFXzd2H0Xo","vkIdClientId":"51586979","yandexIdClientId":null,"formAuthToken":"VQpVJOQYefo03CmP277X6eY_xKULV1e7R-VtmFCDhugGzDgSxXNCGlPW1mdpIOAo6pVK_sdJTbflYKeLHV9ZMw","course":{"start_lesson":{"exercise":null,"units":[{"id":8069,"name":"theory","url":"/courses/css-sass/lessons/intro/theory_unit"}],"links":[],"ordered_units":[{"id":8069,"name":"theory","url":"/courses/css-sass/lessons/intro/theory_unit"}],"id":3604,"slug":"intro","state":"approved","name":"Introduction","course_order":100,"goal":"Learning about the main topic of the course","self_study":null,"theory_video_provider":null,"theory_video_uid":null,"theory":"In the course, we will dive into preprocessors, but before that, we need to understand what problems they solve. CSS is a rather complicated language because you can't nest selectors. It's impossible to inherit styles between different selectors. And at one point, there weren't even variables. Even though there are variables, the lack of nesting, functions, and inheritance makes CSS code hard to read and unnecessarily cumbersome.\n\nTo solve these problems, developers created preprocessors, which are add-ons to CSS. The preprocessors themselves won't let you do anything you can't already do in CSS. When all is said and done, the preprocessor code files are converted to a regular file with a `.css` extension.\n\nIn this course, we'll study the popular SASS preprocessor, which we'll use to teach you:\n\n* Not to duplicate code\n* Use patterns\n* Create your functions\n* Generate styles\n* Use visual nesting\n* Work with conditional constructions\n\nAll this will allow you to write maintainable code and automatically translate it into plain CSS.\n\n## SASS or SCSS\n\nIf you look for information about SASS, you'll most likely see that both SASS and SCSS are a thing.\n\nThey look different, but they're both called SASS. It's confusing, right? When we're talking about the preprocessor, it's called SASS, but you can write in it using one of two syntaxes:\n\n* **SASS**. This syntax doesn't use curly brackets or semicolons. There are more differences, but you can read more about them in the documentation:\n\n ```sass\n .flex\n display: flex\n\n &.justify-center\n justify-content: center\n ```\n\n* **SCSS**. This syntax copies much of the syntax of normal CSS:\n\n ```scss\n .flex {\n display: flex;\n\n &.justify-center {\n justify-content: center;\n }\n }\n ```\n\nBoth of these options will compile the same code:\n\n```css\n.flex {\n display: flex;\n}\n\n.flex.justify-center {\n justify-content: center;\n}\n```\n\nIn this course, we'll use SCSS syntax. It is closer to the usual CSS syntax, so you will be less confused during your first steps in learning the SASS preprocessor.\n\n## Practice\n\nMany of the lessons in this course will include a practice section with a web view. It's a good idea to do more than just a bare minimum. Once you've completed the task, try experimenting with the code and the features you've learned.\n\nDuring the course, you'll come across independent assignments. If necessary, you can practice the tasks you find in the assignments.\n\n## CodePen\n\nAnother opportunity to apply the skills learned in the course is to use the [CodePen](https://codepen.io) service. You can create your pen and tell it to use the CSS preprocessor in the SASS settings.\n"},"id":343,"slug":"css-sass","challenges_count":0,"name":"SASS: Fundamentals of Operations","allow_indexing":true,"state":"approved","course_state":"finished","pricing_type":"paid","description":"With the development of technology and the complexity of layouts came the need to automate the writing of CSS properties. The presence of color schemes and additional values that determine the values of properties revealed difficulties in development. There is a way to turn CSS writing into a process similar to programming. We can do it via preprocessors — languages compiled into CSS. They allow you to create reusable CSS code, use variables, and extend the capabilities of CSS writing. In this course, you will learn the basics of the SASS preprocessor that will allow you to write maintainable and usable CSS code.","kind":"basic","updated_at":"2026-01-20T11:46:24.270Z","language":"html","duration_cache":6360,"skills":["Use the SASS preprocessor and compile its code into CSS.","Extend the capabilities of writing standard CSS.","Use template selectors and mixins.","Create and work with variables."],"keywords":[],"lessons_count":6,"cover":"https://hexlet.io/rails/active_storage/representations/proxy/eyJfcmFpbHMiOnsiZGF0YSI6NzU1MCwicHVyIjoiYmxvYl9pZCJ9fQ==--f14a49ff502f979b417ab7b933968787a7db9620/eyJfcmFpbHMiOnsiZGF0YSI6eyJmb3JtYXQiOiJwbmciLCJyZXNpemVfdG9fZmlsbCI6WzYwMCw0MDBdfSwicHVyIjoidmFyaWF0aW9uIn19--6067466c2912ca31a17eddee04b8cf2a38c6ad17/image.png"},"courseMember":null,"questionsCount":16,"exercisesCount":0,"lessons":[{"ordered_units":[{"id":8069,"name":"theory","url":"/courses/css-sass/lessons/intro/theory_unit"}],"id":3604,"slug":"intro","state":"approved","name":"Introduction","course_order":100,"goal":"Learning about the main topic of the course","exercise_id":null},{"ordered_units":[{"id":8070,"name":"theory","url":"/courses/css-sass/lessons/install/theory_unit"},{"id":8414,"name":"quiz","url":"/courses/css-sass/lessons/install/quiz_unit"}],"id":3605,"slug":"install","state":"approved","name":"Installation","course_order":200,"goal":"Installing the SASS preprocessor","exercise_id":null},{"ordered_units":[{"id":8071,"name":"theory","url":"/courses/css-sass/lessons/extension/theory_unit"},{"id":8415,"name":"quiz","url":"/courses/css-sass/lessons/extension/quiz_unit"}],"id":3606,"slug":"extension","state":"approved","name":"CSS Extension","course_order":300,"goal":"Learning about SASS features allowing to extend the CSS language","exercise_id":null},{"ordered_units":[{"id":8072,"name":"theory","url":"/courses/css-sass/lessons/pattern-selectors/theory_unit"},{"id":8416,"name":"quiz","url":"/courses/css-sass/lessons/pattern-selectors/quiz_unit"}],"id":3607,"slug":"pattern-selectors","state":"approved","name":"Template selectors","course_order":400,"goal":"Exploring pattern selectors and learning about the extended directive","exercise_id":null},{"ordered_units":[{"id":8073,"name":"theory","url":"/courses/css-sass/lessons/variables/theory_unit"},{"id":8417,"name":"quiz","url":"/courses/css-sass/lessons/variables/quiz_unit"}],"id":3608,"slug":"variables","state":"approved","name":"Variables","course_order":500,"goal":"Learning how to use variables and connect files in SASS","exercise_id":null},{"ordered_units":[{"id":8074,"name":"theory","url":"/courses/css-sass/lessons/mixin/theory_unit"}],"id":3609,"slug":"mixin","state":"approved","name":"Mixins","course_order":600,"goal":"Exploring the use of mixins in SASS","exercise_id":null}],"challenges":[],"recommendedLandings":[]},"url":"/courses/css-sass","version":"1656487db0d1dd5f33634fe1070e57e55135cbeb","encryptHistory":false,"clearHistory":false}"><style data-mantine-styles="true">:root, :host{--mantine-font-family: Arial, sans-serif;--mantine-font-family-headings: Arial, sans-serif;--mantine-heading-font-weight: normal;--mantine-radius-default: 0rem;--mantine-primary-color-filled: var(--mantine-color-indigo-filled);--mantine-primary-color-filled-hover: var(--mantine-color-indigo-filled-hover);--mantine-primary-color-light: var(--mantine-color-indigo-light);--mantine-primary-color-light-hover: var(--mantine-color-indigo-light-hover);--mantine-primary-color-light-color: var(--mantine-color-indigo-light-color);--mantine-spacing-xxl: calc(4rem * var(--mantine-scale));--mantine-font-size-xs: 12px;--mantine-font-size-sm: 14px;--mantine-font-size-md: 16px;--mantine-font-size-lg: clamp(16.0000px, calc(15.2727px + 0.2273vw), 18.0000px);--mantine-font-size-xl: clamp(16.0000px, calc(14.5455px + 0.4545vw), 20.0000px);--mantine-font-size-display-3: clamp(32.0000px, calc(26.1818px + 1.8182vw), 48.0000px);--mantine-font-size-display-2: clamp(36.0000px, calc(25.8182px + 3.1818vw), 64.0000px);--mantine-font-size-display-1: clamp(40.0000px, calc(25.4545px + 4.5455vw), 80.0000px);--mantine-font-size-h1: clamp(28.0000px, calc(23.6364px + 1.3636vw), 40.0000px);--mantine-font-size-h2: clamp(24.0000px, calc(21.0909px + 0.9091vw), 32.0000px);--mantine-font-size-h3: clamp(20.0000px, calc(17.0909px + 0.9091vw), 28.0000px);--mantine-font-size-h4: clamp(16.0000px, calc(13.0909px + 0.9091vw), 24.0000px);--mantine-font-size-h5: clamp(16.0000px, calc(14.5455px + 0.4545vw), 20.0000px);--mantine-font-size-h6: 1rem;--mantine-primary-color-0: var(--mantine-color-indigo-0);--mantine-primary-color-1: var(--mantine-color-indigo-1);--mantine-primary-color-2: var(--mantine-color-indigo-2);--mantine-primary-color-3: var(--mantine-color-indigo-3);--mantine-primary-color-4: var(--mantine-color-indigo-4);--mantine-primary-color-5: var(--mantine-color-indigo-5);--mantine-primary-color-6: var(--mantine-color-indigo-6);--mantine-primary-color-7: var(--mantine-color-indigo-7);--mantine-primary-color-8: var(--mantine-color-indigo-8);--mantine-primary-color-9: var(--mantine-color-indigo-9);--mantine-color-red-0: #ffeaea;--mantine-color-red-1: #fed4d4;--mantine-color-red-2: #f4a7a8;--mantine-color-red-3: #ec7878;--mantine-color-red-4: #e55050;--mantine-color-red-5: #e03131;--mantine-color-red-6: #e02829;--mantine-color-red-7: #c71a1c;--mantine-color-red-8: #b21218;--mantine-color-red-9: #9c0411;--mantine-color-violet-0: #fce9ff;--mantine-color-violet-1: #f1cfff;--mantine-color-violet-2: #e09bff;--mantine-color-violet-3: #d16fff;--mantine-color-violet-4: #be37fe;--mantine-color-violet-5: #b51afe;--mantine-color-violet-6: #b009ff;--mantine-color-violet-7: #9b00e4;--mantine-color-violet-8: #8a00cc;--mantine-color-violet-9: #7800b3;--mantine-color-indigo-0: #edecff;--mantine-color-indigo-1: #d6d5fe;--mantine-color-indigo-2: #aaa9f4;--mantine-color-indigo-3: #7b79eb;--mantine-color-indigo-4: #5451e4;--mantine-color-indigo-5: #3b37e0;--mantine-color-indigo-6: #2d2adf;--mantine-color-indigo-7: #1f1ec7;--mantine-color-indigo-8: #1819b2;--mantine-color-indigo-9: #0c149e;--mantine-color-cyan-0: #dffdff;--mantine-color-cyan-1: #caf5ff;--mantine-color-cyan-2: #99e8ff;--mantine-color-cyan-3: #64daff;--mantine-color-cyan-4: #3ccffe;--mantine-color-cyan-5: #24c8fe;--mantine-color-cyan-6: #00c2ff;--mantine-color-cyan-7: #00ade4;--mantine-color-cyan-8: #009acd;--mantine-color-cyan-9: #0085b5;--mantine-color-green-0: #e9fdec;--mantine-color-green-1: #d7f6dc;--mantine-color-green-2: #b0eab9;--mantine-color-green-3: #86df94;--mantine-color-green-4: #62d574;--mantine-color-green-5: #4ccf5f;--mantine-color-green-6: #3fcc54;--mantine-color-green-7: #2fb344;--mantine-color-green-8: #25a03b;--mantine-color-green-9: #138a2e;--mantine-color-yellow-0: #fff7e2;--mantine-color-yellow-1: #ffeecd;--mantine-color-yellow-2: #ffdc9c;--mantine-color-yellow-3: #ffc966;--mantine-color-yellow-4: #feb93a;--mantine-color-yellow-5: #feae1e;--mantine-color-yellow-6: #ffa90f;--mantine-color-yellow-8: #ca8200;--mantine-color-yellow-9: #af7000;--mantine-h1-font-size: clamp(28.0000px, calc(23.6364px + 1.3636vw), 40.0000px);--mantine-h1-font-weight: normal;--mantine-h2-font-size: clamp(24.0000px, calc(21.0909px + 0.9091vw), 32.0000px);--mantine-h2-font-weight: normal;--mantine-h3-font-size: clamp(20.0000px, calc(17.0909px + 0.9091vw), 28.0000px);--mantine-h3-font-weight: normal;--mantine-h4-font-size: clamp(16.0000px, calc(13.0909px + 0.9091vw), 24.0000px);--mantine-h4-font-weight: normal;--mantine-h5-font-size: clamp(16.0000px, calc(14.5455px + 0.4545vw), 20.0000px);--mantine-h5-font-weight: normal;--mantine-h6-font-size: 1rem;--mantine-h6-font-weight: normal;}
:root[data-mantine-color-scheme="dark"], :host([data-mantine-color-scheme="dark"]){--mantine-color-anchor: var(--mantine-color-text);--mantine-color-dimmed: #495057;--mantine-color-dark-filled: var(--mantine-color-dark-5);--mantine-color-dark-filled-hover: var(--mantine-color-dark-6);--mantine-color-dark-light: rgba(105, 105, 105, 0.15);--mantine-color-dark-light-hover: rgba(105, 105, 105, 0.2);--mantine-color-dark-light-color: var(--mantine-color-dark-0);--mantine-color-dark-outline: var(--mantine-color-dark-1);--mantine-color-dark-outline-hover: rgba(184, 184, 184, 0.05);--mantine-color-gray-filled: var(--mantine-color-gray-5);--mantine-color-gray-filled-hover: var(--mantine-color-gray-6);--mantine-color-gray-light: rgba(222, 226, 230, 0.15);--mantine-color-gray-light-hover: rgba(222, 226, 230, 0.2);--mantine-color-gray-light-color: var(--mantine-color-gray-0);--mantine-color-gray-outline: var(--mantine-color-gray-1);--mantine-color-gray-outline-hover: rgba(241, 243, 245, 0.05);--mantine-color-red-filled: var(--mantine-color-red-5);--mantine-color-red-filled-hover: var(--mantine-color-red-6);--mantine-color-red-light: rgba(236, 120, 120, 0.15);--mantine-color-red-light-hover: rgba(236, 120, 120, 0.2);--mantine-color-red-light-color: var(--mantine-color-red-0);--mantine-color-red-outline: var(--mantine-color-red-1);--mantine-color-red-outline-hover: rgba(254, 212, 212, 0.05);--mantine-color-pink-filled: var(--mantine-color-pink-5);--mantine-color-pink-filled-hover: var(--mantine-color-pink-6);--mantine-color-pink-light: rgba(250, 162, 193, 0.15);--mantine-color-pink-light-hover: rgba(250, 162, 193, 0.2);--mantine-color-pink-light-color: var(--mantine-color-pink-0);--mantine-color-pink-outline: var(--mantine-color-pink-1);--mantine-color-pink-outline-hover: rgba(255, 222, 235, 0.05);--mantine-color-grape-filled: var(--mantine-color-grape-5);--mantine-color-grape-filled-hover: var(--mantine-color-grape-6);--mantine-color-grape-light: rgba(229, 153, 247, 0.15);--mantine-color-grape-light-hover: rgba(229, 153, 247, 0.2);--mantine-color-grape-light-color: var(--mantine-color-grape-0);--mantine-color-grape-outline: var(--mantine-color-grape-1);--mantine-color-grape-outline-hover: rgba(243, 217, 250, 0.05);--mantine-color-violet-filled: var(--mantine-color-violet-5);--mantine-color-violet-filled-hover: var(--mantine-color-violet-6);--mantine-color-violet-light: rgba(209, 111, 255, 0.15);--mantine-color-violet-light-hover: rgba(209, 111, 255, 0.2);--mantine-color-violet-light-color: var(--mantine-color-violet-0);--mantine-color-violet-outline: var(--mantine-color-violet-1);--mantine-color-violet-outline-hover: rgba(241, 207, 255, 0.05);--mantine-color-indigo-filled: var(--mantine-color-indigo-5);--mantine-color-indigo-filled-hover: var(--mantine-color-indigo-6);--mantine-color-indigo-light: rgba(123, 121, 235, 0.15);--mantine-color-indigo-light-hover: rgba(123, 121, 235, 0.2);--mantine-color-indigo-light-color: var(--mantine-color-indigo-0);--mantine-color-indigo-outline: var(--mantine-color-indigo-1);--mantine-color-indigo-outline-hover: rgba(214, 213, 254, 0.05);--mantine-color-blue-filled: var(--mantine-color-blue-5);--mantine-color-blue-filled-hover: var(--mantine-color-blue-6);--mantine-color-blue-light: rgba(116, 192, 252, 0.15);--mantine-color-blue-light-hover: rgba(116, 192, 252, 0.2);--mantine-color-blue-light-color: var(--mantine-color-blue-0);--mantine-color-blue-outline: var(--mantine-color-blue-1);--mantine-color-blue-outline-hover: rgba(208, 235, 255, 0.05);--mantine-color-cyan-filled: var(--mantine-color-cyan-5);--mantine-color-cyan-filled-hover: var(--mantine-color-cyan-6);--mantine-color-cyan-light: rgba(100, 218, 255, 0.15);--mantine-color-cyan-light-hover: rgba(100, 218, 255, 0.2);--mantine-color-cyan-light-color: var(--mantine-color-cyan-0);--mantine-color-cyan-outline: var(--mantine-color-cyan-1);--mantine-color-cyan-outline-hover: rgba(202, 245, 255, 0.05);--mantine-color-teal-filled: var(--mantine-color-teal-5);--mantine-color-teal-filled-hover: var(--mantine-color-teal-6);--mantine-color-teal-light: rgba(99, 230, 190, 0.15);--mantine-color-teal-light-hover: rgba(99, 230, 190, 0.2);--mantine-color-teal-light-color: var(--mantine-color-teal-0);--mantine-color-teal-outline: var(--mantine-color-teal-1);--mantine-color-teal-outline-hover: rgba(195, 250, 232, 0.05);--mantine-color-green-filled: var(--mantine-color-green-5);--mantine-color-green-filled-hover: var(--mantine-color-green-6);--mantine-color-green-light: rgba(134, 223, 148, 0.15);--mantine-color-green-light-hover: rgba(134, 223, 148, 0.2);--mantine-color-green-light-color: var(--mantine-color-green-0);--mantine-color-green-outline: var(--mantine-color-green-1);--mantine-color-green-outline-hover: rgba(215, 246, 220, 0.05);--mantine-color-lime-filled: var(--mantine-color-lime-5);--mantine-color-lime-filled-hover: var(--mantine-color-lime-6);--mantine-color-lime-light: rgba(192, 235, 117, 0.15);--mantine-color-lime-light-hover: rgba(192, 235, 117, 0.2);--mantine-color-lime-light-color: var(--mantine-color-lime-0);--mantine-color-lime-outline: var(--mantine-color-lime-1);--mantine-color-lime-outline-hover: rgba(233, 250, 200, 0.05);--mantine-color-yellow-filled: var(--mantine-color-yellow-5);--mantine-color-yellow-filled-hover: var(--mantine-color-yellow-6);--mantine-color-yellow-light: rgba(255, 201, 102, 0.15);--mantine-color-yellow-light-hover: rgba(255, 201, 102, 0.2);--mantine-color-yellow-light-color: var(--mantine-color-yellow-0);--mantine-color-yellow-outline: var(--mantine-color-yellow-1);--mantine-color-yellow-outline-hover: rgba(255, 238, 205, 0.05);--mantine-color-orange-filled: var(--mantine-color-orange-5);--mantine-color-orange-filled-hover: var(--mantine-color-orange-6);--mantine-color-orange-light: rgba(255, 192, 120, 0.15);--mantine-color-orange-light-hover: rgba(255, 192, 120, 0.2);--mantine-color-orange-light-color: var(--mantine-color-orange-0);--mantine-color-orange-outline: var(--mantine-color-orange-1);--mantine-color-orange-outline-hover: rgba(255, 232, 204, 0.05);--app-cta-gradient: linear-gradient(90deg, var(--mantine-color-blue-9) 0%, var(--mantine-color-cyan-7) 100%);--app-color-surface: #2e2e2e;}
:root[data-mantine-color-scheme="light"], :host([data-mantine-color-scheme="light"]){--mantine-color-anchor: var(--mantine-color-text);--mantine-color-dimmed: #495057;--mantine-color-red-light: rgba(224, 40, 41, 0.1);--mantine-color-red-light-hover: rgba(224, 40, 41, 0.12);--mantine-color-red-outline-hover: rgba(224, 40, 41, 0.05);--mantine-color-violet-light: rgba(176, 9, 255, 0.1);--mantine-color-violet-light-hover: rgba(176, 9, 255, 0.12);--mantine-color-violet-outline-hover: rgba(176, 9, 255, 0.05);--mantine-color-indigo-light: rgba(45, 42, 223, 0.1);--mantine-color-indigo-light-hover: rgba(45, 42, 223, 0.12);--mantine-color-indigo-outline-hover: rgba(45, 42, 223, 0.05);--mantine-color-cyan-light: rgba(0, 194, 255, 0.1);--mantine-color-cyan-light-hover: rgba(0, 194, 255, 0.12);--mantine-color-cyan-outline-hover: rgba(0, 194, 255, 0.05);--mantine-color-green-light: rgba(63, 204, 84, 0.1);--mantine-color-green-light-hover: rgba(63, 204, 84, 0.12);--mantine-color-green-outline-hover: rgba(63, 204, 84, 0.05);--mantine-color-yellow-light: rgba(255, 169, 15, 0.1);--mantine-color-yellow-light-hover: rgba(255, 169, 15, 0.12);--mantine-color-yellow-outline-hover: rgba(255, 169, 15, 0.05);--app-color-surface: #f1f3f5;--app-cta-gradient: linear-gradient(90deg, var(--mantine-color-blue-filled) 0%, var(--mantine-color-cyan-5) 100%);}</style><style data-mantine-styles="classes">@media (max-width: 35.99375em) {.mantine-visible-from-xs {display: none !important;}}@media (min-width: 36em) {.mantine-hidden-from-xs {display: none !important;}}@media (max-width: 47.99375em) {.mantine-visible-from-sm {display: none !important;}}@media (min-width: 48em) {.mantine-hidden-from-sm {display: none !important;}}@media (max-width: 61.99375em) {.mantine-visible-from-md {display: none !important;}}@media (min-width: 62em) {.mantine-hidden-from-md {display: none !important;}}@media (max-width: 74.99375em) {.mantine-visible-from-lg {display: none !important;}}@media (min-width: 75em) {.mantine-hidden-from-lg {display: none !important;}}@media (max-width: 87.99375em) {.mantine-visible-from-xl {display: none !important;}}@media (min-width: 88em) {.mantine-hidden-from-xl {display: none !important;}}</style><div style="--container-size:var(--container-size-lg);margin-top:var(--mantine-spacing-xl);height:100%" class="m_7485cace mantine-Container-root" data-size="lg" data-strategy="block"><style data-mantine-styles="inline">.__m__-_R_eub_{margin-bottom:var(--mantine-spacing-xs);}@media(min-width: 36em){.__m__-_R_eub_{margin-bottom:var(--mantine-spacing-xs);}}</style><div style="--group-gap:var(--mantine-spacing-md);--group-align:center;--group-justify:space-between;--group-wrap:wrap" class="m_4081bf90 mantine-Group-root __m__-_R_eub_"><style data-mantine-styles="inline">.__m__-_R_deub_{width:100%;}@media(min-width: 62em){.__m__-_R_deub_{width:66%;}}</style><div class="__m__-_R_deub_"><div style="--group-gap:var(--mantine-spacing-md);--group-align:center;--group-justify:start;--group-wrap:nowrap" class="m_4081bf90 mantine-Group-root"><h1 style="--title-fw:var(--mantine-h1-font-weight);--title-lh:var(--mantine-h1-line-height);--title-fz:var(--mantine-h1-font-size)" class="m_8a5d1357 mantine-Title-root" data-order="1">Course “SASS: Fundamentals of Operations”</h1></div></div></div><style data-mantine-styles="inline">.__m__-_R_1iub_{width:100%;}@media(min-width: 62em){.__m__-_R_1iub_{width:66%;}}</style><div style="margin-bottom:var(--mantine-spacing-xl)" class="__m__-_R_1iub_"><div style="margin-bottom:var(--mantine-spacing-lg)" class=""></div><div style="margin-top:var(--mantine-spacing-lg)" class="mantine-hidden-from-md"><div style="--stack-gap:var(--mantine-spacing-xs);--stack-align:stretch;--stack-justify:flex-start" class="m_6d731127 mantine-Stack-root"><a style="--button-height:var(--button-height-md);--button-padding-x:var(--button-padding-x-md);--button-fz:var(--mantine-font-size-md);--button-color:var(--mantine-color-white);text-decoration:none" class="mantine-focus-auto m_849cf0da mantine-focus-auto mantine-active m_77c9d27d mantine-Button-root m_87cf2631 mantine-UnstyledButton-root m_b6d8b162 mantine-Text-root mantine-Anchor-root" data-size="md" data-underline="hover" href="https://hexlet.io/subscription/new"><span class="m_80f1301b mantine-Button-inner"><span class="m_811560b9 mantine-Button-label">Subscribe</span></span></a><p style="color:var(--mantine-color-dimmed);font-size:var(--mantine-font-size-sm);text-align:center" class="mantine-focus-auto m_b6d8b162 mantine-Text-root">Access this and all courses with a subscription</p></div></div></div><style data-mantine-styles="inline">.__m__-_R_2iub_{--grid-gutter:var(--mantine-spacing-md);}</style><div class="m_410352e9 mantine-Grid-root __m__-_R_2iub_"><div class="m_dee7bd2f mantine-Grid-inner"><style data-mantine-styles="inline">.__m__-_R_dmiub_{--col-flex-grow:auto;--col-flex-basis:100%;--col-max-width:100%;}@media(min-width: 62em){.__m__-_R_dmiub_{--col-flex-grow:auto;--col-flex-basis:66.66666666666667%;--col-max-width:66.66666666666667%;}}</style><div class="m_96bdd299 mantine-Grid-col __m__-_R_dmiub_"><div style="margin-bottom:var(--mantine-spacing-xl);padding-inline:var(--mantine-spacing-xl);padding-block:var(--mantine-spacing-lg)" class="m_e615b15f mantine-Card-root m_1b7284a3 mantine-Paper-root" data-with-border="true"><p style="margin-bottom:var(--mantine-spacing-md);font-size:var(--mantine-font-size-h5);font-weight:bold" class="mantine-focus-auto m_b6d8b162 mantine-Text-root">What's included</p><style data-mantine-styles="inline">.__m__-_R_ajddmiub_{--sg-spacing-x:var(--mantine-spacing-xs);--sg-spacing-y:var(--mantine-spacing-xs);--sg-cols:1;}@media(min-width: 48em){.__m__-_R_ajddmiub_{--sg-cols:2;}}</style><div class="m_2415a157 mantine-SimpleGrid-root __m__-_R_ajddmiub_"><div style="align-items:center" class="m_8bffd616 mantine-Flex-root __m__-_R_1mqjddmiub_"><div style="--ti-size:var(--ti-size-xs);--ti-bg:transparent;--ti-color:var(--mantine-color-indigo-light-color);--ti-bd:calc(0.0625rem * var(--mantine-scale)) solid transparent;margin-inline-end:var(--mantine-spacing-xs);color:inherit" class="m_7341320d mantine-ThemeIcon-root" data-variant="transparent" data-size="xs"><svg xmlns="http://www.w3.org/2000/svg" width="24" height="24" viewBox="0 0 24 24" fill="none" stroke="currentColor" stroke-width="2" stroke-linecap="round" stroke-linejoin="round" class="tabler-icon tabler-icon-check "><path d="M5 12l5 5l10 -10"></path></svg></div>6 lessons (video and/or text)</div><div style="align-items:center" class="m_8bffd616 mantine-Flex-root __m__-_R_2mqjddmiub_"><div style="--ti-size:var(--ti-size-xs);--ti-bg:transparent;--ti-color:var(--mantine-color-indigo-light-color);--ti-bd:calc(0.0625rem * var(--mantine-scale)) solid transparent;margin-inline-end:var(--mantine-spacing-xs);color:inherit" class="m_7341320d mantine-ThemeIcon-root" data-variant="transparent" data-size="xs"><svg xmlns="http://www.w3.org/2000/svg" width="24" height="24" viewBox="0 0 24 24" fill="none" stroke="currentColor" stroke-width="2" stroke-linecap="round" stroke-linejoin="round" class="tabler-icon tabler-icon-check "><path d="M5 12l5 5l10 -10"></path></svg></div>0 exercises in the simulator</div><div style="align-items:center" class="m_8bffd616 mantine-Flex-root __m__-_R_3mqjddmiub_"><div style="--ti-size:var(--ti-size-xs);--ti-bg:transparent;--ti-color:var(--mantine-color-indigo-light-color);--ti-bd:calc(0.0625rem * var(--mantine-scale)) solid transparent;margin-inline-end:var(--mantine-spacing-xs);color:inherit" class="m_7341320d mantine-ThemeIcon-root" data-variant="transparent" data-size="xs"><svg xmlns="http://www.w3.org/2000/svg" width="24" height="24" viewBox="0 0 24 24" fill="none" stroke="currentColor" stroke-width="2" stroke-linecap="round" stroke-linejoin="round" class="tabler-icon tabler-icon-check "><path d="M5 12l5 5l10 -10"></path></svg></div>16 verification tests</div><div style="align-items:center" class="m_8bffd616 mantine-Flex-root __m__-_R_4mqjddmiub_"><div style="--ti-size:var(--ti-size-xs);--ti-bg:transparent;--ti-color:var(--mantine-color-indigo-light-color);--ti-bd:calc(0.0625rem * var(--mantine-scale)) solid transparent;margin-inline-end:var(--mantine-spacing-xs);color:inherit" class="m_7341320d mantine-ThemeIcon-root" data-variant="transparent" data-size="xs"><svg xmlns="http://www.w3.org/2000/svg" width="24" height="24" viewBox="0 0 24 24" fill="none" stroke="currentColor" stroke-width="2" stroke-linecap="round" stroke-linejoin="round" class="tabler-icon tabler-icon-check "><path d="M5 12l5 5l10 -10"></path></svg></div>Self-study tasks</div><div style="align-items:center" class="m_8bffd616 mantine-Flex-root __m__-_R_5mqjddmiub_"><div style="--ti-size:var(--ti-size-xs);--ti-bg:transparent;--ti-color:var(--mantine-color-indigo-light-color);--ti-bd:calc(0.0625rem * var(--mantine-scale)) solid transparent;margin-inline-end:var(--mantine-spacing-xs);color:inherit" class="m_7341320d mantine-ThemeIcon-root" data-variant="transparent" data-size="xs"><svg xmlns="http://www.w3.org/2000/svg" width="24" height="24" viewBox="0 0 24 24" fill="none" stroke="currentColor" stroke-width="2" stroke-linecap="round" stroke-linejoin="round" class="tabler-icon tabler-icon-check "><path d="M5 12l5 5l10 -10"></path></svg></div>Extra materials</div><div style="align-items:center" class="m_8bffd616 mantine-Flex-root __m__-_R_6mqjddmiub_"><div style="--ti-size:var(--ti-size-xs);--ti-bg:transparent;--ti-color:var(--mantine-color-indigo-light-color);--ti-bd:calc(0.0625rem * var(--mantine-scale)) solid transparent;margin-inline-end:var(--mantine-spacing-xs);color:inherit" class="m_7341320d mantine-ThemeIcon-root" data-variant="transparent" data-size="xs"><svg xmlns="http://www.w3.org/2000/svg" width="24" height="24" viewBox="0 0 24 24" fill="none" stroke="currentColor" stroke-width="2" stroke-linecap="round" stroke-linejoin="round" class="tabler-icon tabler-icon-plus "><path d="M12 5l0 14"></path><path d="M5 12l14 0"></path></svg></div>6 extended materials</div></div></div><div style="margin-bottom:var(--mantine-spacing-xl)" class=""><h2 style="--title-fw:var(--mantine-h2-font-weight);--title-lh:var(--mantine-h2-line-height);--title-fz:var(--mantine-h2-font-size);margin-bottom:var(--mantine-spacing-md)" class="m_8a5d1357 mantine-Title-root" data-order="2">Description</h2><div class="m_d08caa0 mantine-Typography-root"><p>With the development of technology and the complexity of layouts came the need to automate the writing of CSS properties. The presence of color schemes and additional values that determine the values of properties revealed difficulties in development. There is a way to turn CSS writing into a process similar to programming. We can do it via preprocessors — languages compiled into CSS. They allow you to create reusable CSS code, use variables, and extend the capabilities of CSS writing. In this course, you will learn the basics of the SASS preprocessor that will allow you to write maintainable and usable CSS code.</p></div></div><div style="margin-bottom:var(--mantine-spacing-xl)" class=""><h2 style="--title-fw:var(--mantine-h2-font-weight);--title-lh:var(--mantine-h2-line-height);--title-fz:var(--mantine-h2-font-size);margin-bottom:var(--mantine-spacing-md)" class="m_8a5d1357 mantine-Title-root" data-order="2">You will learn</h2><ul class="m_abbac491 mantine-List-root" data-type="none"><li style="margin-bottom:var(--mantine-spacing-xs);line-height:var(--mantine-line-height-sm)" class="m_abb6bec2 mantine-List-item" data-with-icon="true" data-centered="true"><div class="m_75cd9f71 mantine-List-itemWrapper"><span class="m_60f83e5b mantine-List-itemIcon"><div style="--ti-size:var(--ti-size-xs);--ti-bg:transparent;--ti-color:var(--mantine-color-indigo-light-color);--ti-bd:calc(0.0625rem * var(--mantine-scale)) solid transparent;color:inherit" class="m_7341320d mantine-ThemeIcon-root" data-variant="transparent" data-size="xs"><svg xmlns="http://www.w3.org/2000/svg" width="24" height="24" viewBox="0 0 24 24" fill="none" stroke="currentColor" stroke-width="2" stroke-linecap="round" stroke-linejoin="round" class="tabler-icon tabler-icon-plus "><path d="M12 5l0 14"></path><path d="M5 12l14 0"></path></svg></div></span><span class="mantine-List-itemLabel">Use the SASS preprocessor and compile its code into CSS.</span></div></li><li style="margin-bottom:var(--mantine-spacing-xs);line-height:var(--mantine-line-height-sm)" class="m_abb6bec2 mantine-List-item" data-with-icon="true" data-centered="true"><div class="m_75cd9f71 mantine-List-itemWrapper"><span class="m_60f83e5b mantine-List-itemIcon"><div style="--ti-size:var(--ti-size-xs);--ti-bg:transparent;--ti-color:var(--mantine-color-indigo-light-color);--ti-bd:calc(0.0625rem * var(--mantine-scale)) solid transparent;color:inherit" class="m_7341320d mantine-ThemeIcon-root" data-variant="transparent" data-size="xs"><svg xmlns="http://www.w3.org/2000/svg" width="24" height="24" viewBox="0 0 24 24" fill="none" stroke="currentColor" stroke-width="2" stroke-linecap="round" stroke-linejoin="round" class="tabler-icon tabler-icon-plus "><path d="M12 5l0 14"></path><path d="M5 12l14 0"></path></svg></div></span><span class="mantine-List-itemLabel">Extend the capabilities of writing standard CSS.</span></div></li><li style="margin-bottom:var(--mantine-spacing-xs);line-height:var(--mantine-line-height-sm)" class="m_abb6bec2 mantine-List-item" data-with-icon="true" data-centered="true"><div class="m_75cd9f71 mantine-List-itemWrapper"><span class="m_60f83e5b mantine-List-itemIcon"><div style="--ti-size:var(--ti-size-xs);--ti-bg:transparent;--ti-color:var(--mantine-color-indigo-light-color);--ti-bd:calc(0.0625rem * var(--mantine-scale)) solid transparent;color:inherit" class="m_7341320d mantine-ThemeIcon-root" data-variant="transparent" data-size="xs"><svg xmlns="http://www.w3.org/2000/svg" width="24" height="24" viewBox="0 0 24 24" fill="none" stroke="currentColor" stroke-width="2" stroke-linecap="round" stroke-linejoin="round" class="tabler-icon tabler-icon-plus "><path d="M12 5l0 14"></path><path d="M5 12l14 0"></path></svg></div></span><span class="mantine-List-itemLabel">Use template selectors and mixins.</span></div></li><li style="margin-bottom:var(--mantine-spacing-xs);line-height:var(--mantine-line-height-sm)" class="m_abb6bec2 mantine-List-item" data-with-icon="true" data-centered="true"><div class="m_75cd9f71 mantine-List-itemWrapper"><span class="m_60f83e5b mantine-List-itemIcon"><div style="--ti-size:var(--ti-size-xs);--ti-bg:transparent;--ti-color:var(--mantine-color-indigo-light-color);--ti-bd:calc(0.0625rem * var(--mantine-scale)) solid transparent;color:inherit" class="m_7341320d mantine-ThemeIcon-root" data-variant="transparent" data-size="xs"><svg xmlns="http://www.w3.org/2000/svg" width="24" height="24" viewBox="0 0 24 24" fill="none" stroke="currentColor" stroke-width="2" stroke-linecap="round" stroke-linejoin="round" class="tabler-icon tabler-icon-plus "><path d="M12 5l0 14"></path><path d="M5 12l14 0"></path></svg></div></span><span class="mantine-List-itemLabel">Create and work with variables.</span></div></li></ul></div><div style="margin-bottom:var(--mantine-spacing-xl)" class=""><h2 style="--title-fw:var(--mantine-h2-font-weight);--title-lh:var(--mantine-h2-line-height);--title-fz:var(--mantine-h2-font-size);margin-bottom:var(--mantine-spacing-md)" class="m_8a5d1357 mantine-Title-root" data-order="2">Syllabus</h2><table style="--table-vertical-spacing:calc(0.4375rem * var(--mantine-scale))" class="m_b23fa0ef mantine-Table-table"><tbody class="m_b2404537 mantine-Table-tbody"><tr class="m_4e7aa4fd mantine-Table-tr" data-with-row-border="true"><td class="m_4e7aa4ef mantine-Table-td"><p style="font-size:var(--mantine-font-size-h4)" class="mantine-focus-auto m_b6d8b162 mantine-Text-root">1</p></td><td style="padding-block:var(--mantine-spacing-lg)" class="m_4e7aa4ef mantine-Table-td"><a style="color:inherit;font-size:var(--mantine-font-size-h5)" class="mantine-focus-auto m_849cf0da m_b6d8b162 mantine-Text-root mantine-Anchor-root" data-underline="hover" href="/courses/css-sass/lessons/intro/theory_unit">Introduction</a><p style="color:var(--mantine-color-dimmed)" class="mantine-focus-auto m_b6d8b162 mantine-Text-root">Learning about the main topic of the course</p></td></tr><tr class="m_4e7aa4fd mantine-Table-tr" data-with-row-border="true"><td class="m_4e7aa4ef mantine-Table-td"><p style="font-size:var(--mantine-font-size-h4)" class="mantine-focus-auto m_b6d8b162 mantine-Text-root">2</p></td><td style="padding-block:var(--mantine-spacing-lg)" class="m_4e7aa4ef mantine-Table-td"><a style="color:inherit;font-size:var(--mantine-font-size-h5)" class="mantine-focus-auto m_849cf0da m_b6d8b162 mantine-Text-root mantine-Anchor-root" data-underline="hover" href="/courses/css-sass/lessons/install/theory_unit">Installation</a><p style="color:var(--mantine-color-dimmed)" class="mantine-focus-auto m_b6d8b162 mantine-Text-root">Installing the SASS preprocessor</p></td></tr><tr class="m_4e7aa4fd mantine-Table-tr" data-with-row-border="true"><td class="m_4e7aa4ef mantine-Table-td"><p style="font-size:var(--mantine-font-size-h4)" class="mantine-focus-auto m_b6d8b162 mantine-Text-root">3</p></td><td style="padding-block:var(--mantine-spacing-lg)" class="m_4e7aa4ef mantine-Table-td"><a style="color:inherit;font-size:var(--mantine-font-size-h5)" class="mantine-focus-auto m_849cf0da m_b6d8b162 mantine-Text-root mantine-Anchor-root" data-underline="hover" href="/courses/css-sass/lessons/extension/theory_unit">CSS Extension</a><p style="color:var(--mantine-color-dimmed)" class="mantine-focus-auto m_b6d8b162 mantine-Text-root">Learning about SASS features allowing to extend the CSS language</p></td></tr><tr class="m_4e7aa4fd mantine-Table-tr" data-with-row-border="true"><td class="m_4e7aa4ef mantine-Table-td"><p style="font-size:var(--mantine-font-size-h4)" class="mantine-focus-auto m_b6d8b162 mantine-Text-root">4</p></td><td style="padding-block:var(--mantine-spacing-lg)" class="m_4e7aa4ef mantine-Table-td"><a style="color:inherit;font-size:var(--mantine-font-size-h5)" class="mantine-focus-auto m_849cf0da m_b6d8b162 mantine-Text-root mantine-Anchor-root" data-underline="hover" href="/courses/css-sass/lessons/pattern-selectors/theory_unit">Template selectors</a><p style="color:var(--mantine-color-dimmed)" class="mantine-focus-auto m_b6d8b162 mantine-Text-root">Exploring pattern selectors and learning about the extended directive</p></td></tr><tr class="m_4e7aa4fd mantine-Table-tr" data-with-row-border="true"><td class="m_4e7aa4ef mantine-Table-td"><p style="font-size:var(--mantine-font-size-h4)" class="mantine-focus-auto m_b6d8b162 mantine-Text-root">5</p></td><td style="padding-block:var(--mantine-spacing-lg)" class="m_4e7aa4ef mantine-Table-td"><a style="color:inherit;font-size:var(--mantine-font-size-h5)" class="mantine-focus-auto m_849cf0da m_b6d8b162 mantine-Text-root mantine-Anchor-root" data-underline="hover" href="/courses/css-sass/lessons/variables/theory_unit">Variables</a><p style="color:var(--mantine-color-dimmed)" class="mantine-focus-auto m_b6d8b162 mantine-Text-root">Learning how to use variables and connect files in SASS</p></td></tr><tr class="m_4e7aa4fd mantine-Table-tr" data-with-row-border="true"><td class="m_4e7aa4ef mantine-Table-td"><p style="font-size:var(--mantine-font-size-h4)" class="mantine-focus-auto m_b6d8b162 mantine-Text-root">6</p></td><td style="padding-block:var(--mantine-spacing-lg)" class="m_4e7aa4ef mantine-Table-td"><a style="color:inherit;font-size:var(--mantine-font-size-h5)" class="mantine-focus-auto m_849cf0da m_b6d8b162 mantine-Text-root mantine-Anchor-root" data-underline="hover" href="/courses/css-sass/lessons/mixin/theory_unit">Mixins</a><p style="color:var(--mantine-color-dimmed)" class="mantine-focus-auto m_b6d8b162 mantine-Text-root">Exploring the use of mixins in SASS</p></td></tr></tbody></table></div></div><style data-mantine-styles="inline">.__m__-_R_lmiub_{--col-flex-grow:auto;--col-flex-basis:100%;--col-max-width:100%;}@media(min-width: 62em){.__m__-_R_lmiub_{--col-flex-grow:auto;--col-flex-basis:33.333333333333336%;--col-max-width:33.333333333333336%;}}</style><div class="m_96bdd299 mantine-Grid-col __m__-_R_lmiub_"><div style="--paper-shadow:var(--mantine-shadow-sm);margin-top:calc(-10.625rem * var(--mantine-scale));padding:0rem;position:sticky;top:calc(3.125rem * var(--mantine-scale))" class="m_e615b15f mantine-Card-root m_1b7284a3 mantine-Paper-root mantine-visible-from-md"><div class="m_e615b15f mantine-Card-root m_1b7284a3 mantine-Paper-root"><div style="margin-bottom:var(--mantine-spacing-md)" class="m_599a2148 mantine-Card-section" data-first-section="true"><img class="m_9e117634 mantine-Image-root" src="https://hexlet.io/rails/active_storage/representations/proxy/eyJfcmFpbHMiOnsiZGF0YSI6NzU1MCwicHVyIjoiYmxvYl9pZCJ9fQ==--f14a49ff502f979b417ab7b933968787a7db9620/eyJfcmFpbHMiOnsiZGF0YSI6eyJmb3JtYXQiOiJwbmciLCJyZXNpemVfdG9fZmlsbCI6WzYwMCw0MDBdfSwicHVyIjoidmFyaWF0aW9uIn19--6067466c2912ca31a17eddee04b8cf2a38c6ad17/image.png" alt="Course Cover"/></div><ul style="margin-bottom:var(--mantine-spacing-md)" class="m_abbac491 mantine-List-root"><li style="line-height:var(--mantine-line-height-xl)" class="m_abb6bec2 mantine-List-item" data-with-icon="true" data-centered="true"><div class="m_75cd9f71 mantine-List-itemWrapper"><span class="m_60f83e5b mantine-List-itemIcon"><svg xmlns="http://www.w3.org/2000/svg" width="18" height="18" viewBox="0 0 24 24" fill="none" stroke="currentColor" stroke-width="2" stroke-linecap="round" stroke-linejoin="round" class="tabler-icon tabler-icon-device-desktop-code "><path d="M12.5 16h-8.5a1 1 0 0 1 -1 -1v-10a1 1 0 0 1 1 -1h16a1 1 0 0 1 1 1v8"></path><path d="M7 20h4"></path><path d="M9 16v4"></path><path d="M20 21l2 -2l-2 -2"></path><path d="M17 17l-2 2l2 2"></path></svg></span><span class="mantine-List-itemLabel">Run code right in the browser</span></div></li><li style="line-height:var(--mantine-line-height-xl)" class="m_abb6bec2 mantine-List-item" data-with-icon="true" data-centered="true"><div class="m_75cd9f71 mantine-List-itemWrapper"><span class="m_60f83e5b mantine-List-itemIcon"><svg xmlns="http://www.w3.org/2000/svg" width="18" height="18" viewBox="0 0 24 24" fill="none" stroke="currentColor" stroke-width="2" stroke-linecap="round" stroke-linejoin="round" class="tabler-icon tabler-icon-infinity "><path d="M9.828 9.172a4 4 0 1 0 0 5.656a10 10 0 0 0 2.172 -2.828a10 10 0 0 1 2.172 -2.828a4 4 0 1 1 0 5.656a10 10 0 0 1 -2.172 -2.828a10 10 0 0 0 -2.172 -2.828"></path></svg></span><span class="mantine-List-itemLabel">Lifetime access</span></div></li><li style="line-height:var(--mantine-line-height-xl)" class="m_abb6bec2 mantine-List-item" data-with-icon="true" data-centered="true"><div class="m_75cd9f71 mantine-List-itemWrapper"><span class="m_60f83e5b mantine-List-itemIcon"><svg xmlns="http://www.w3.org/2000/svg" width="18" height="18" viewBox="0 0 24 24" fill="none" stroke="currentColor" stroke-width="2" stroke-linecap="round" stroke-linejoin="round" class="tabler-icon tabler-icon-clock "><path d="M3 12a9 9 0 1 0 18 0a9 9 0 0 0 -18 0"></path><path d="M12 7v5l3 3"></path></svg></span><span class="mantine-List-itemLabel">Learn at your own pace</span></div></li></ul><div style="--stack-gap:var(--mantine-spacing-xs);--stack-align:stretch;--stack-justify:flex-start" class="m_6d731127 mantine-Stack-root"><a style="--button-height:var(--button-height-md);--button-padding-x:var(--button-padding-x-md);--button-fz:var(--mantine-font-size-md);--button-color:var(--mantine-color-white);text-decoration:none" class="mantine-focus-auto m_849cf0da mantine-focus-auto mantine-active m_77c9d27d mantine-Button-root m_87cf2631 mantine-UnstyledButton-root m_b6d8b162 mantine-Text-root mantine-Anchor-root" data-size="md" data-underline="hover" href="https://hexlet.io/subscription/new"><span class="m_80f1301b mantine-Button-inner"><span class="m_811560b9 mantine-Button-label">Subscribe</span></span></a><p style="color:var(--mantine-color-dimmed);font-size:var(--mantine-font-size-sm);text-align:center" class="mantine-focus-auto m_b6d8b162 mantine-Text-root">Access this and all courses with a subscription</p></div></div></div></div></div></div></div></div>
</main>
<footer class="bg-dark fw-light text-light px-3 py-5">
<div class="row small">
<div class="col-12 col-sm-6 col-md-3">
<div class="h5 mb-3">About Hexlet</div>
<ul class="list-unstyled">
<li>
<a class="nav-link link-light py-1 ps-0" href="/pages/about">About us</a>
</li>
<li>
<span class="nav-link link-light py-1 ps-0 external-link" data-href="https://help.hexlet.io/category/4316" data-target="_blank" role="button">Help</span>
</li>
<li>
<a class="nav-link link-light py-1 ps-0" target="_blank" rel="noopener noreferrer" href="/map">Site Map</a>
</li>
</ul>
</div>
<div class="col-12 col-sm-6 col-md-3">
<div class="h5 fw-normal mb-3">Learn</div>
<ul class="list-unstyled">
<li>
<a class="nav-link link-light py-1 ps-0" href="/courses_backend-development">Backend
</a></li>
<li>
<a class="nav-link link-light py-1 ps-0" href="/courses_devops">DevOps
</a></li>
<li>
<a class="nav-link link-light py-1 ps-0" href="/courses_frontend-development">Frontend
</a></li>
<li>
<a class="nav-link link-light py-1 ps-0" href="/courses_python">Python
</a></li>
<li>
<a class="nav-link link-light py-1 ps-0" href="/courses_testing">Testing
</a></li>
</ul>
</div>
<div class="col-12 col-sm-6 col-md-3">
<div class="h5"><span class="translation_missing" title="translation missing: en.layouts.footer_content.popular_courses_for_beginners">Popular Courses For Beginners</span></div>
<ul class="list-unstyled">
<li>
<a class="nav-link link-light py-1 ps-0" href="/programs/frontend">Frontend Developer</a>
</li>
</ul>
</div>
<div class="col-12 col-sm-6 col-md-3">
<div class="h5"><span class="translation_missing" title="translation missing: en.layouts.footer_content.popular_courses_for_advanced">Popular Courses For Advanced</span></div>
<ul class="list-unstyled">
<li>
<a class="nav-link link-light py-1 ps-0" href="/programs/web-development-free">Fundamentals of Web Development</a>
</li>
<li>
<a class="nav-link link-light py-1 ps-0" href="/programs/js-react-development">React</a>
</li>
<li>
<a class="nav-link link-light py-1 ps-0" href="/programs/css-animation">CSS Animation</a>
</li>
<li>
<a class="nav-link link-light py-1 ps-0" href="/programs/http-api">HTTP API</a>
</li>
<li>
<a class="nav-link link-light py-1 ps-0" href="/programs/layout-designer-positioning">Position CSS</a>
</li>
<li>
<a class="nav-link link-light py-1 ps-0" href="/programs/cli-basics">Command line basics</a>
</li>
<li>
<a class="nav-link link-light py-1 ps-0" href="/programs/git-basics-free">Git fundamentals</a>
</li>
</ul>
</div>
</div>
<hr>
<div class="row">
<div class="col-12 col-sm-4 col-md-2">
<div class="fs-4">
<ul class="list-unstyled d-flex">
<li class="me-3">
<a aria-label="Facebook" target="_blank" class="link-light" rel="noopener noreferrer nofollow" href="https://www.facebook.com/hexlethq"><span class="bi bi-facebook"></span>
</a></li>
<li class="me-3">
<a aria-label="Instagram" target="_blank" class="link-light" rel="noopener noreferrer nofollow" href="https://www.instagram.com/hello_hexlet/"><span class="bi bi-instagram"></span>
</a></li>
<li>
<a aria-label="Twitter" target="_blank" class="link-light" rel="noopener noreferrer nofollow" href="https://twitter.com/Hexlet_IO"><span class="bi bi-twitter-x"></span>
</a></li>
</ul>
</div>
<div class="mb-2 d-flex flex-column">
<a class="link-light text-decoration-none" rel="nofollow" href="mailto:support@hexlet.io">support@hexlet.io</a>
<a class="link-light text-decoration-none py-2" target="_blank" href="https://t.me/hexlet_help_bot">t.me/hexlet_help_bot</a>
</div>
<ul class="list-unstyled d-flex">
<li class="me-3">
<span class="link-light text-decoration-none opacity-50 x-font-size-18 opacity-100 external-link" rel="nofollow" data-href="https://hexlet.io/locale/switch?new_locale=en" data-target="_self" role="button"><span class="my-auto">EN</span>
</span></li>
<li class="me-3">
<span class="link-light text-decoration-none opacity-50 x-font-size-18 external-link" rel="nofollow" data-href="https://ru.hexlet.io/locale/switch?new_locale=ru" data-target="_self" role="button"><span class="my-auto">RU</span>
</span></li>
<li class="me-3">
<span class="link-light text-decoration-none opacity-50 x-font-size-18 external-link" rel="nofollow" data-href="https://kz.hexlet.io/locale/switch?new_locale=kz" data-target="_self" role="button"><span class="my-auto">KZ</span>
</span></li>
</ul>
</div>
<div class="col-12 col-sm-4 col-md-3">
<ul class="list-unstyled fs-4">
<li class="mb-3">
<a class="link-light text-decoration-none" href="tel:%2B7%20717%20272%2076%2070">+7 717 272 76 70</a>
<span class="d-block opacity-50 small">free call</span>
</li>
</ul>
</div>
<div class="col-12 col-sm-4 col-md-3">
<ul class="list-unstyled small">
<li>
<a class="nav-link link-light py-1 ps-0" href="/pages/legal">Legal</a>
</li>
<li>
<a class="nav-link link-light py-1 ps-0" href="/pages/offer"><span class="translation_missing" title="translation missing: en.layouts.footer_content.offer">Offer</span></a>
</li>
<li>
<a class="nav-link link-light py-1 ps-0" href="/pages/contacts"><span class="translation_missing" title="translation missing: en.layouts.footer_content.contacts">Contacts</span></a>
</li>
</ul>
</div>
<div class="col-12 col-sm-12 col-md-4 small">
<div class="mb-2">
<div>TOO "Hexlet"</div>
<div>The Republic of Kazakhstan, Almaty</div>
<div>Auezova St., 14A</div>
<div>BIN 230340043714
</div>
</div>
</div>
</div>
</footer>
<div id="root-assistant-offcanvas"></div>
<script src="/vite/assets/assistant-CIOaBlj-.js" crossorigin="anonymous" type="module"></script><link rel="modulepreload" href="/vite/assets/chunk-DsPFFUou.js" as="script" crossorigin="anonymous">
<link rel="modulepreload" href="/vite/assets/init-0bhwJkNI.js" as="script" crossorigin="anonymous">
<link rel="modulepreload" href="/vite/assets/ErrorFallbackBlock-V3hfk_CP.js" as="script" crossorigin="anonymous">
<link rel="modulepreload" href="/vite/assets/MarkdownBlock-DejNWqwz.js" as="script" crossorigin="anonymous">
<link rel="modulepreload" href="/vite/assets/gon-B-jV56Ol.js" as="script" crossorigin="anonymous">
<link rel="modulepreload" href="/vite/assets/mantine-DOJkeu70.js" as="script" crossorigin="anonymous">
<link rel="modulepreload" href="/vite/assets/shiki-DZwEN4Zo.js" as="script" crossorigin="anonymous">
<link rel="modulepreload" href="/vite/assets/utils-ClTF9s_T.js" as="script" crossorigin="anonymous">
<link rel="modulepreload" href="/vite/assets/routes-mvvEXZQ8.js" as="script" crossorigin="anonymous">
<link rel="modulepreload" href="/vite/assets/lib-CJocDKTE.js" as="script" crossorigin="anonymous">
<link rel="modulepreload" href="/vite/assets/Box-DH3_MBnL.js" as="script" crossorigin="anonymous">
<link rel="modulepreload" href="/vite/assets/notifications.store-Cj65YiRw.js" as="script" crossorigin="anonymous">
<link rel="modulepreload" href="/vite/assets/useIsomorphicEffect-Csl7vw8x.js" as="script" crossorigin="anonymous">
<link rel="modulepreload" href="/vite/assets/lib-DeAQqnBE.js" as="script" crossorigin="anonymous">
<link rel="modulepreload" href="/vite/assets/axios-CN66HKVH.js" as="script" crossorigin="anonymous">
<link rel="modulepreload" href="/vite/assets/classnames-DQgTDFJJ.js" as="script" crossorigin="anonymous">
<link rel="modulepreload" href="/vite/assets/dayjs.min-Bfba02I7.js" as="script" crossorigin="anonymous">
<link rel="modulepreload" href="/vite/assets/debounce-BcxwEZ7X.js" as="script" crossorigin="anonymous">
<link rel="modulepreload" href="/vite/assets/prop-types-DGBR76ns.js" as="script" crossorigin="anonymous">
<link rel="modulepreload" href="/vite/assets/client-CYyKzrjQ.js" as="script" crossorigin="anonymous">
<link rel="modulepreload" href="/vite/assets/react-dom-SJZekO2j.js" as="script" crossorigin="anonymous">
<link rel="modulepreload" href="/vite/assets/useTranslation-bo78L81P.js" as="script" crossorigin="anonymous">
<link rel="modulepreload" href="/vite/assets/compiler-runtime-BhqaZ6vG.js" as="script" crossorigin="anonymous">
<link rel="modulepreload" href="/vite/assets/jsx-runtime-DlXMvSuQ.js" as="script" crossorigin="anonymous">
<link rel="modulepreload" href="/vite/assets/react-CFtMU8gd.js" as="script" crossorigin="anonymous">
<script defer src="https://static.cloudflareinsights.com/beacon.min.js/vcd15cbe7772f49c399c6a5babf22c1241717689176015" integrity="sha512-ZpsOmlRQV6y907TI0dKBHq9Md29nnaEIPlkf84rnaERnq6zvWvPUqr2ft8M1aS28oN72PdrCzSjY4U6VaAw1EQ==" data-cf-beacon='{"version":"2024.11.0","token":"d11015b65d11429ea6b4a2ef37dd7e0b","server_timing":{"name":{"cfCacheStatus":true,"cfEdge":true,"cfExtPri":true,"cfL4":true,"cfOrigin":true,"cfSpeedBrain":true},"location_startswith":null}}' crossorigin="anonymous"></script>
</body>
</html>