Rivalry2

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<!DOCTYPE html> <html lang="en"> <head> <title>On-hover effects: buttons, part 3</title> <meta charset="utf-8"> <link rel="stylesheet" href="style.css"> </head> <body> <div class="buttons"> <button class="btn-green" type="button"> <img class="icon" src="icons/reload-6x-white.png" alt="Reloading the icon"> Refresh </button> <button class="btn-yellow" type="button"> <span class="hidden">25<img src="icons/dollar-6x-white.png" alt="Dollar icon"></span> <img class="icon" src="icons/cart-6x-white.png" alt="Cart icon"> Buy </button> <button class="btn-blue" type="button"> <span class="hidden"><img src="icons/envelope-open-6x-white.png" alt="Open envelope icon"></span> <img class="icon" src="icons/envelope-closed-6x-white.png" alt="Closed envelope icon"> Read </button> </div> </body> </html>
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Minimum of boring theory and lots of practical tasks."><meta name="twitter:image" property="og:image" content="https://htmlacademy.org/og/htmlacademy.png"><meta name="twitter:card" content="summary_large_image"><link rel="canonical" href="https://htmlacademy.org/courses/dynamic/2d-transforms/hover-effects-3"><meta name="theme-color" content="#2f358f"></head><body class="course-interface course-interface--light" data-base="/assets/courses/32/"><header class="page-header page-header--course"><div class="page-header__inner"><div class="page-header__top"><a class="page-header__logo" href="/" aria-label="HTML Academy Home"><img src="https://assets.htmlacademy.org/img/logo--small.svg?cs=1218aec0be4a5f23db79ad29a14e30f7f9fb9a25" width="24" height="36" alt="HTML Academy"></a><nav class="main-nav main-nav--mini" role="navigation"><div class="main-nav__course-nav"><a class="main-nav__course-item main-nav__course-button main-nav__course-button--prev" href="/courses/dynamic/2d-transforms/hover-effects-2">On-hover effects: buttons, part 2</a><div class="main-nav__course-item main-nav__course-list main-nav__course-list--collapsed"><b class="main-nav__course-title">2D Transforms</b><span class="main-nav__course-stat">24/32</span><div class="main-nav__course-contents"><a class="main-nav__course-contents-link" href="/courses/dynamic/2d-transforms">Back to the list of tasks</a><ul class="main-nav__course-contents-list"><li class="main-nav__course-contents-item"><a href="/courses/dynamic/2d-transforms/move-horizontally">1. Moving objects horizontally</a></li><li class="main-nav__course-contents-item"><a href="/courses/dynamic/2d-transforms/move-vertically">2. Moving objects vertically</a></li><li class="main-nav__course-contents-item"><a href="/courses/dynamic/2d-transforms/fireball-training">3. Fireball training</a></li><li class="main-nav__course-contents-item"><a href="/courses/dynamic/2d-transforms/increase-decrease-size">4. Increasing and decreasing the size</a></li><li class="main-nav__course-contents-item"><a href="/courses/dynamic/2d-transforms/defend-city">5. Defending the city</a></li><li class="main-nav__course-contents-item"><a href="/courses/dynamic/2d-transforms/begin-journey">6. The beginning of the journey</a></li><li class="main-nav__course-contents-item"><a href="/courses/dynamic/2d-transforms/maze">7. The maze</a></li><li class="main-nav__course-contents-item"><a href="/courses/dynamic/2d-transforms/battle-1">8. The battle, part 1</a></li><li class="main-nav__course-contents-item"><a href="/courses/dynamic/2d-transforms/battle-2">9. The battle, part 2</a></li><li class="main-nav__course-contents-item"><a href="/courses/dynamic/2d-transforms/mysterious-card">10. Test: The mysterious card</a></li><li class="main-nav__course-contents-item"><a href="/courses/dynamic/2d-transforms/battle-3">11. The battle, part 3</a></li><li class="main-nav__course-contents-item"><a href="/courses/dynamic/2d-transforms/shattered-crystal">12. Test: The shattered crystal</a></li><li class="main-nav__course-contents-item"><a href="/courses/dynamic/2d-transforms/final-battle">13. The final battle</a></li><li class="main-nav__course-contents-item"><a href="/courses/dynamic/2d-transforms/transform-origin-1">14. Features of transform-origin, part 1</a></li><li class="main-nav__course-contents-item"><a href="/courses/dynamic/2d-transforms/transform-origin-2">15. Features of transform-origin, part 2</a></li><li class="main-nav__course-contents-item"><a href="/courses/dynamic/2d-transforms/transform-origin-3">16. Features of transform-origin, part 3</a></li><li class="main-nav__course-contents-item"><a href="/courses/dynamic/2d-transforms/transform-origin-4">17. Features of transform-origin, part 4</a></li><li class="main-nav__course-contents-item"><a href="/courses/dynamic/2d-transforms/transform-translate">18. Centering with transform: translate</a></li><li class="main-nav__course-contents-item"><a href="/courses/dynamic/2d-transforms/rotate-text">19. Rotating the text in blocks</a></li><li class="main-nav__course-contents-item"><a href="/courses/dynamic/2d-transforms/rotate-background-text">20. Rotating the text in the background</a></li><li class="main-nav__course-contents-item"><a href="/courses/dynamic/2d-transforms/custom-shadows">21. Custom shadows</a></li><li class="main-nav__course-contents-item"><a href="/courses/dynamic/2d-transforms/hover-effects-1">22. On-hover effects: buttons, part 1</a></li><li class="main-nav__course-contents-item"><a href="/courses/dynamic/2d-transforms/hover-effects-2">23. On-hover effects: buttons, part 2</a></li><li class="main-nav__course-contents-item main-nav__course-contents-item--current"><a href="/courses/dynamic/2d-transforms/hover-effects-3">24. On-hover effects: buttons, part 3</a></li><li class="main-nav__course-contents-item"><a href="/courses/dynamic/2d-transforms/hover-effects-4">25. On-hover effects: the gallery</a></li><li class="main-nav__course-contents-item"><a href="/courses/dynamic/2d-transforms/cards-stack">26. The “stack” of cards</a></li><li class="main-nav__course-contents-item"><a href="/courses/dynamic/2d-transforms/round-menu">27. Preparing the round menu</a></li><li class="main-nav__course-contents-item"><a href="/courses/dynamic/2d-transforms/round-menu-1">28. Round menu, step 1</a></li><li class="main-nav__course-contents-item"><a href="/courses/dynamic/2d-transforms/round-menu-2">29. Round menu, step 2</a></li><li class="main-nav__course-contents-item"><a href="/courses/dynamic/2d-transforms/round-menu-3">30. Round menu, step 3</a></li><li class="main-nav__course-contents-item"><a href="/courses/dynamic/2d-transforms/round-menu-final">31. The round menu, final part</a></li><li class="main-nav__course-contents-item"><a href="/courses/dynamic/2d-transforms/arrange-cards">32. Test: Arranging the cards</a></li></ul></div></div><a class="main-nav__course-item main-nav__course-button main-nav__course-button--next" href="/courses/dynamic/2d-transforms/hover-effects-4">On-hover effects: the gallery</a></div><ul class="main-nav__list main-nav__list--user main-nav__list--user-guest"><li class="main-nav__item" itemprop="name"><a class="main-nav__link" href="/signup?redirect_url=%2Fcourses%2Fdynamic%2F2d-transforms%2Fhover-effects-3" title="Sign up" data-modal="open" data-value="register" itemprop="url"><span class="main-nav__icon" aria-hidden="true"><svg aria-hidden="true"><use xlink:href="/img/sprites/general.svg#user"></use></svg></span>Sign up</a></li><li class="main-nav__item main-nav__item--login" itemprop="name"><a class="main-nav__link" href="/login?redirect_url=%2Fcourses%2Fdynamic%2F2d-transforms%2Fhover-effects-3" title="Log in" data-modal="open" data-value="login" itemprop="url"><span class="main-nav__icon" aria-hidden="true"><svg aria-hidden="true"><use 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2.79-6.835-.084.354 2.613.43 4.138-1.208 1.078-1.125.446-2-.186-3.375-1.71-3.552-4.585-6.323-7.384-8.918-.716-.69-1.44-2.428-2.706-2-.995.353-.93 3.2-.716 4.073 1.09 7.448 4.065 18.263 4.065 18.263zm37.372-.78c-1.704-1.826-2.822-4.12-3.208-6.585 0 .354-2.614.354-4.056-1.29-.995-1.127-.362-1.86.363-3.117 1.86-3.198 4.863-5.718 7.746-8.136.81-.604 1.627-1.47 2.79-.93.994.428.715 2.334.548 3.115-1.083 5.72-2.48 11.376-4.183 16.943z" fill="#FFF"/><path d="M53.564 20.422c-1.98.51-4.138 1.636-5.105 3.487-.43-2.196 1.645-4.65 3.393-5.832.333-.21.312-.703-.037-.886-.162-.085-.357-.076-.512.022-2.157 1.562-4.417 4.5-3.784 7.188.076.262.354.41.614.325l-.075.28c-.085.603.93.864.994.26.446-2.158 2.706-3.376 4.77-3.897.372-.076.522-.526.27-.81-.133-.15-.342-.204-.53-.138zM17.457 18.06c-.55-.354-.995.428-.55.865 1.433 1.004 3.182 3.05 3.395 4.956-.93-1.86-3.05-2.975-5.105-3.486-.386-.005-.633.41-.445.747.042.076.103.14.176.184 2.073.52 4.324 1.73 4.77 3.896.106.328.5.46.78.26.273.192.653.06.745-.26.735-2.66-1.6-5.728-3.766-7.16z" fill="#F1662A"/></svg></span><p class="course-loading-overlay__message"><b class="course-loading-overlay__message-title">Loading…</b><br><span class="course-loading-overlay__message-text">Everything will be ready in few seconds</span></p></div></div><div class="course-layout__sidebar course-theory"><div class="course-theory__inner course-theory__inner--left-stub"><button class="course-theory__close icon-close icon-close--light" type="button">Close</button><ul class="course-tabs course-tabs--non-interactive course-layout__theory-heading js--theory-tabs"><li class="course-tabs__item course-tabs__item--external course-tab course-tab--centered"><span class="course-tab__icon"><svg aria-hidden="true"><use xlink:href="/img/sprites/courses.svg#icon-theory"></use></svg></span><span class="course-tab__title">Theory</span></li><li class="course-tabs__item course-tabs__item--internal course-tab course-tab--centered course-tab--active js--theory-tab__theory"><span class="course-tab__icon"><svg aria-hidden="true"><use xlink:href="/img/sprites/courses.svg#icon-theory"></use></svg></span><span class="course-tab__title">Theory</span></li><li class="course-tabs__item course-tabs__item--internal course-tab course-tab--centered js--theory-tab__comments"><span class="course-tab__icon"><svg aria-hidden="true" style="width: 16px; height: 16px; fill: #2e2c9c;"><use xlink:href="/img/sprites/up.svg#comment"></use></svg></span><span class="course-tab__title">Comments</span></li></ul><section class="course-theory__content"><div class="js--theory-pane__theory course-theory__content-inner"><h1 class="course-theory__content-heading">On-hover effects: buttons, part 3</h1><div class="course-theory__content-text"><p>Another button and another effect that is similar to the previous ones: when you hover the mouse, let’s make the icon disappear gradually using the <code>opacity</code> property and simultaneously show the <code>.hidden</code> hidden block. In this case, you can also supplement the effect with the fact that the hidden block will initially be “collapsed” by the <code>scale</code> property to zero, and when it appears, it will increase in size with increasing opacity.</p></div></div><div class="js--theory-pane__comments hidden course-theory__content-inner"><div class="course-theory__content-text"><h2 class="course-theory__content-heading">Comments</h2><div id="disqus_thread"></div><script>
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                    </script><noscript>Please enable JavaScript to view the <a href="https://disqus.com/?ref_noscript">comments powered by Disqus.</a></noscript></div></div></section><div class="course-theory__controls"><button class="button button--close" type="button">To the task</button></div></div></div><div class="course-layout__column course-layout__column--left"><ul class="js--course-tabs course-tabs course-layout__course-tabs"><li class="js--editor-tab course-tabs__item course-tab course-tabs__item--limited course-tabs__item--limited-large course-tab--active" data-editor="html"><span class="course-tab__title course-tab__title--indent"><span class="course-tab__title-part course-tab__title-part--active">index.html</span></span><button class="js--editor-split course-tab__button course-tab__button--split" type="button"><svg aria-hidden="true"><use xlink:href="/img/sprites/courses.svg#icon-split"></use></svg><span class="tooltip tooltip--light tooltip--to-top tooltip--with-wrap tooltip--short course-tab__tooltip"><span class="tooltip__wrap">Split mode</span></span></button></li><li class="js--editor-tab course-tabs__item course-tab course-tabs__item--limited course-tabs__item--limited-large" data-editor="css"><span class="course-tab__title course-tab__title--indent"><span class="course-tab__title-part course-tab__title-part--active">style.css</span></span><button class="js--editor-split course-tab__button course-tab__button--split" type="button"><svg aria-hidden="true"><use xlink:href="/img/sprites/courses.svg#icon-split"></use></svg><span class="tooltip tooltip--light tooltip--to-top tooltip--with-wrap tooltip--short course-tab__tooltip"><span class="tooltip__wrap">Split mode</span></span></button></li></ul><div class="course-layout__editors"><div class="js--editor course-editor course-layout__editor" id="" data-tab="html" data-split=""><span class="course-editor__label"><span class="course-editor__label-item">HTML</span><button class="course-editor__label-item course-editor__label-item--interactive hidden js--editor__unsplit-button course-editor__label-item--simple" title="No split" type="button"><svg width="7" height="10" viewBox="0 0 7 10" xmlns="http://www.w3.org/2000/svg"><g stroke="currentColor" fill="none" fill-rule="evenodd"><path stroke-linecap="round" d="M.6 3.503L3.443.518l2.842 2.985"></path><path d="M3.5 1.5v7.16" stroke-linecap="square"></path></g></svg></button></span><div class="course-editor__item" id="html-editor">&lt;!DOCTYPE html&gt;
&lt;html lang=&quot;en&quot;&gt;
  &lt;head&gt;
    &lt;title&gt;On-hover effects: buttons, part 3&lt;/title&gt;
    &lt;meta charset=&quot;utf-8&quot;&gt;
    &lt;link rel=&quot;stylesheet&quot; href=&quot;style.css&quot;&gt;
  &lt;/head&gt;
  &lt;body&gt;
    &lt;div class=&quot;buttons&quot;&gt;
      &lt;button class=&quot;btn-green&quot; type=&quot;button&quot;&gt;
        &lt;img class=&quot;icon&quot; src=&quot;icons/reload-6x-white.png&quot; alt=&quot;Reloading the icon&quot;&gt; Refresh
      &lt;/button&gt;
      &lt;button class=&quot;btn-yellow&quot; type=&quot;button&quot;&gt;
        &lt;span class=&quot;hidden&quot;&gt;25&lt;img src=&quot;icons/dollar-6x-white.png&quot; alt=&quot;Dollar icon&quot;&gt;&lt;/span&gt;
        &lt;img class=&quot;icon&quot; src=&quot;icons/cart-6x-white.png&quot; alt=&quot;Cart icon&quot;&gt; Buy
      &lt;/button&gt;
      &lt;button class=&quot;btn-blue&quot; type=&quot;button&quot;&gt;
        &lt;span class=&quot;hidden&quot;&gt;&lt;img src=&quot;icons/envelope-open-6x-white.png&quot; alt=&quot;Open envelope icon&quot;&gt;&lt;/span&gt;
        &lt;img class=&quot;icon&quot; src=&quot;icons/envelope-closed-6x-white.png&quot; alt=&quot;Closed envelope icon&quot;&gt; Read
      &lt;/button&gt;
    &lt;/div&gt;
  &lt;/body&gt;
&lt;/html&gt;
</div></div><div class="js--editor course-editor course-layout__editor course-editor--hidden" id="" data-tab="css" data-split=""><span class="course-editor__label"><span class="course-editor__label-item">CSS</span><button class="course-editor__label-item course-editor__label-item--interactive hidden js--editor__unsplit-button course-editor__label-item--simple" title="No split" type="button"><svg width="7" height="10" viewBox="0 0 7 10" xmlns="http://www.w3.org/2000/svg"><g stroke="currentColor" fill="none" fill-rule="evenodd"><path stroke-linecap="round" d="M.6 3.503L3.443.518l2.842 2.985"></path><path d="M3.5 1.5v7.16" stroke-linecap="square"></path></g></svg></button></span><div class="course-editor__item" id="css-editor">body {
  margin: 0;
  padding: 0;
  font-family: &quot;Arial Narrow&quot;, &quot;Arial&quot;, sans-serif;
  background-color: #f5f5f5;
}

.buttons {
  width: 400px;
  margin: 50px auto;
  padding: 10px 20px;
  text-align: center;
  background-color: white;
  box-shadow: 0 0 3px #cccccc;
}

button {
  position: relative;
  width: 300px;
  height: 60px;
  margin: 20px auto;
  padding: 0;
  font-size: 22px;
  text-align: center;
  color: white;
  border: none;
  outline: none;
  cursor: pointer;
  overflow: hidden;
  text-shadow: 0 1px 2px rgba(0, 0, 0, 0.25);
  transition: transform 0.4s ease-in-out;
}

button:active {
  top: 1px;
  box-shadow: none;
}

.icon {
  position: absolute;
  left: 20px;
}

.hidden {
  position: absolute;
  opacity: 0;
}

.hidden img {
  width: 24px;
  height: 24px;
  margin-left: 5px;
  vertical-align: top;
}

.btn-yellow {
  background-color: #f1c40f;
  border-bottom: 2px solid #e2b607;
  box-shadow: inset 0 -2px #e2b607;
}

.btn-green {
  background-color: #1abc9c;
  border-bottom: 2px solid #12ab8d;
  box-shadow: inset 0 -2px #12ab8d;
}

.btn-blue {
  background-color: #2980b9;
  border-bottom: 2px solid #2475ab;
  box-shadow: inset 0 -2px #2475ab;
}

.btn-green .icon {
  width: 24px;
  height: 24px;
  transition: all 0.4s ease-in-out;
}

.btn-green:hover .icon {
  transform: rotate(360deg) scale(1.2);
}

.btn-yellow .icon {
  width: 32px;
  height: 32px;
  transition: all 0.4s ease-in-out;
}

.btn-yellow:hover .hidden {
  left: 20px;
  opacity: 1;
  transition: opacity 0.2s ease-in-out;
}

.btn-yellow:hover .icon {
  transform: scale(10);
  opacity: 0;
}

.btn-blue .icon {
  width: 28px;
  height: 28px;
  transition: all 0.2s ease-in-out;
}

.btn-blue .hidden {
  left: 15px;
  top: 12px;
  opacity: 0;
}

.btn-blue .hidden img {
  width: 28px;
  height: 28px;
}

.btn-blue:hover .hidden {
  transition:
    opacity 0.2s ease-in-out,
    transform 0.2s ease-in-out 0.1s;
}

.btn-blue:hover .icon {
}
</div></div></div><div class="course-editor-controls"><button class="course-editor-controls__item course-editor-controls__item--answer" type="button">Show the answer</button></div><div class="js--feedback course-unhappy"><button class="js--feedback-btn course-unhappy__button" type="button"><span class="sr-only">Complain</span><svg aria-hidden="true"><use xlink:href="/img/sprites/courses.svg#unhappy"></use></svg></button><div class="js--feedback-modal course-unhappy__modal course-unhappy__modal--step-one"><form method="POST" action="/courses/dynamic/2d-transforms/hover-effects-3/signal" class="course-unhappy__form form"><input type="hidden" name="csrf_name" value="csrf69aea7c4578f3"><input type="hidden" name="csrf_value" value="dd732f506904dfae2c0449bbb20996fd"><p class="course-unhappy__text">What didn’t you like in this task?</p><div class="course-unhappy__slide"><div class="course-unhappy__wrap"><div class="course-unhappy__list"><label class="checkbox checkbox--small"><input class="checkbox__input" name="problems" value="1" type="checkbox"><span class="checkbox__text">The code check doesn’t work</span></label><label class="checkbox checkbox--small"><input class="checkbox__input" name="problems" value="2" type="checkbox"><span class="checkbox__text">The task is too difficult</span></label><label class="checkbox checkbox--small"><input class="checkbox__input" name="problems" value="3" type="checkbox"><span class="checkbox__text">The theory is hard to understand</span></label><label class="checkbox checkbox--small"><input class="js--feedback-other-checkbox checkbox__input" name="problems" value="0" type="checkbox"><span class="checkbox__text">Other (will write below)</span></label></div><div class="course-unhappy__message"><label class="sr-only" for="id-message">Другое (сейчас напишу)</label><textarea class="field field--area" id="id-message" name="message" placeholder="For example, a typo in the word «heading»"></textarea></div></div></div><button class="course-unhappy__control course-unhappy__control--prev" type="button"><span class="sr-only">Prev</span><svg aria-hidden="true"><use xlink:href="/img/sprites/landings.svg#arrow"></use></svg></button><button class="course-unhappy__control course-unhappy__control--next" type="button" disabled><span class="sr-only">Next</span><svg aria-hidden="true"><use xlink:href="/img/sprites/landings.svg#arrow"></use></svg></button><button class="js--submit-btn button" disabled>Submit</button></form><p class="course-unhappy__result hidden">Thanks! We’ll fix everything at once!</p></div></div></div><div class="course-layout__column course-layout__column--right"><span class="course-separator-control"><svg aria-hidden="true"><use xlink:href="/img/sprites/courses.svg#icon-arrows-separator"></use></svg></span><div class="course-browser"><div class="course-browser__menu"><span class="course-browser__menu-item course-browser__address"><span class="course-browser__menu-item-inner"><span class="course-browser__address-text"></span></span></span><button class="js--autorun course-browser__menu-item course-browser__menu-button course-browser__menu-button--text-with-icon course-browser__menu-button--autorun course-browser__menu-button--autorun-on" title="Autorun" type="button"><span class="course-browser__menu-item-inner"><svg aria-hidden="true"><use xlink:href="/img/sprites/courses.svg#icon-autorun"></use></svg>
 Autorun
    </span></button><button class="course-browser__menu-item course-browser__menu-button course-browser__menu-button--expand" type="button"><svg xmlns="http://www.w3.org/2000/svg" width="11" height="11" viewBox="0 0 11 11"><path d="M1.375 5.125v4.5h4.5m3.75-3.75v-4.5h-4.5" fill="none" fill-rule="evenodd" stroke="currentColor"></path></svg></button></div><div class="course-browser__notification js--browser-change-heading hidden"><p class="course-browser__notification-text">The code has changed, click “Refresh” or turn autorun on.</p><button class="course-browser__notification-button course-browser__notification-button--refresh js--close" type="button"><svg aria-hidden="true"><use xlink:href="/img/sprites/courses.svg#icon-refresh"></use></svg>
 Refresh</button></div><div class="course-browser__content"><div class="course-browser__modal js--browser-modal"><div class="course-browser__notification course-browser__modal-heading js--browser-modal-heading"><p class="course-browser__notification-text">You’ve gone to a different page</p><button class="course-browser__notification-button js--close" type="button">&larr; Go back</button></div><div class="course-browser__zoomer"><iframe class="js--preview-document course-browser__content course-browser__zoomer-element"></iframe><p class="course-browser__focus-message">
      Click inside the mini-browser to shift the focus onto this window.
    </p></div></div><div class="course-browser__menu course-browser__menu--vertical"><button class="course-browser__menu-item course-browser__menu-button course-browser__menu-button--increase" type="button" disabled title="Larger"><span class="course-browser__menu-item-inner">Larger</span></button><span class="course-browser__menu-item course-browser__zoom"><span class="course-browser__menu-item-inner">100%</span></span><button class="course-browser__menu-item course-browser__menu-button course-browser__menu-button--decrease" type="button" title="Smaller"><span class="course-browser__menu-item-inner">Smaller</span></button></div><div class="js--validation-view course-browser__results-restriction course-browser__results-restriction--mini"><span class="tooltip tooltip--light tooltip--short course-browser__results-restriction-tooltip"><span class="js--tooltip-text"></span><button class="js--validation-view-close course-browser__results-restriction-tooltip-close icon-close" type="button">Закрыть</button></span></div></div><div class="course-goals js--goals"><div class="course-goals__heading"><span class="course-goals__heading-title"><span class="course-goals__count-label">Goals</span><span class="course-goals__count">completed</span></span><div class="js--annotations course-task-stats course-task-stats--disabled  course-task-stats--centered "><span class="course-task-stats__indicator"><svg width="12" height="12" viewBox="0 0 16 16" fill="none" xmlns="http://www.w3.org/2000/svg"><path fill-rule="evenodd" clip-rule="evenodd" d="M15 8C15 11.866 11.866 15 8 15C4.13403 15 1 11.866 1 8C1 4.13403 4.13403 1 8 1C11.866 1 15 4.13403 15 8ZM16 8C16 12.4183 12.4183 16 8 16C3.58173 16 0 12.4183 0 8C0 3.58173 3.58173 0 8 0C12.4183 0 16 3.58173 16 8ZM6.7287 3.88849C6.6958 3.59229 6.92761 3.33325 7.22565 3.33325H8.77502C9.07306 3.33325 9.30487 3.59229 9.27197 3.88849L8.71643 8.88849C8.68829 9.14166 8.47424 9.33325 8.21948 9.33325H7.78119C7.52643 9.33325 7.31238 9.14166 7.28424 8.88849L6.7287 3.88849ZM9.33368 12.0001C9.33368 12.7365 8.73669 13.3334 8.00031 13.3334C7.26392 13.3334 6.66699 12.7365 6.66699 12.0001C6.66699 11.2637 7.26392 10.6667 8.00031 10.6667C8.73669 10.6667 9.33368 11.2637 9.33368 12.0001Z" fill="currentColor"></path></svg><span class="js--annotations-counter course-task-stats__counter">0</span></span><div class="course-task-stats__scroller-wrapper"><div class="course-task-stats__scroller"><ul class="js--annotations-list course-task-stats__list"></ul></div></div></div><button class="course-goals__button course-goals__button--expand js--goals__expand" type="button"><svg aria-hidden="true"><use xlink:href="/img/sprites/courses.svg#icon-collapse"></use></svg></button><a class="course-goals__button course-goals__button--next button button--green button--without-border hidden" href="/courses/dynamic/2d-transforms/hover-effects-4" title="On-hover effects: the gallery"><svg aria-hidden="true"><use xlink:href="/img/sprites/courses.svg#arrow-white--mini"></use></svg></a></div><div class="course-goals__content"><ol class="course-goals__list"><li class="course-goals__list-item">For <code>.btn-blue:hover .icon</code>, set <code>opacity</code> to <code>0</code><span class="mark">.</span></li><li class="course-goals__list-item">For <code>.btn-blue:hover .hidden</code>, set the <code>scale</code> transform to the value <code>1</code> and the <code>opacity</code> to <code>1</code><span class="mark">.</span></li><li class="course-goals__list-item">For <code>.btn-blue .hidden</code>, set the <code>scale</code> transform to the value <code>0</code><span class="mark">.</span></li></ol><p class="course-goals__visible-text">After you complete every change, hover the cursor over the blue button to check your work.</p></div></div></div></div></article></div><div class="course-interface__overlay course-interface__overlay--active"></div></main><script
    src="https://assets.htmlacademy.org/scripts/courses-spa/htmlacademy-task.v43.js"
    data-task-type="html-css"
    data-assets-path="https://assets.htmlacademy.org/scripts/courses-spa/"
    data-lang="en"
  ></script><script>HtmlacademyTask.setRoutes({task:'/courses/dynamic/2d-transforms/hover-effects-3',check:'/courses/dynamic/2d-transforms/hover-effects-3/check'});</script><script>HtmlacademyTask.setup(function(){this.setView(HtmlCssView,function(){this.setSplitEditor("css")}),this.setRunner(HtmlCssRunner),this.setChecker(HtmlCssChecker,function(o){o.addGoal("goal1",function(o,t){return t.propertyHasValue(".btn-blue:hover .icon","opacity","0")}),o.addGoal("goal2",function(o,t){return t.propertyHasValue(".btn-blue:hover .hidden","transform","scale(1)")&&t.propertyHasValue(".btn-blue:hover .hidden","opacity","1")}),o.addGoal("goal3",function(o){return o.changeEtalon(function(){this.css(function(){this.append(".btn-blue .hidden {transform: scale(0);}")})}),o.node(".btn-blue .hidden").hasSame("transform")})}),this.setAnswers([{goal:1,editor:"css",data:{tooltip:"Make the icon transparent on hover.<br>Hover the cursor over the blue button to check!",actions:[{action:"addLine",cursorPosition:{row:124,column:2},to:"opacity: 0;"}]}},{goal:2,editor:"css",data:{tooltip:"Make the icon opaque on hover, and assign it normal scale.<br>Hover the cursor over the blue button to check!",actions:[{action:"addLine",cursorPosition:{row:118,column:2},to:"opacity: 1;"},{action:"addLine",cursorPosition:{row:122,column:2},to:"transform: scale(1);"}]}},{goal:3,editor:"css",data:{tooltip:"Decrease the scale to 0 in its normal state.<br>Hover the cursor over the blue button to check!",actions:[{action:"addLine",cursorPosition:{row:110,column:2},to:"transform: scale(0);"}]}}])});</script><footer class="page-footer page-footer--tiny"><div class="page-footer__inner"><p><a href="/docs/cookies">Cookies</a> ∙
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