Two more values for the background-size property are contain and cover.
The contain value works like this:
- The image proportions are preserved.
- The image is stretched to the maximum possible size so that it completely fills in the background boundaries in both width and height.
- The image may not cover the entire background area of the block if the proportions of the image and the block are different.
The cover value works differently:
- The image proportions are preserved;
- The image is assigned the minimum possible dimensions that will allow it to cover the entire background area of the block;
- if the dimensions of the image and the block are different, then part of the image is cropped.
Let’s try out these values in practice.
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</script><link rel="stylesheet" href="https://assets.htmlacademy.org/css/core.v284.css"><link rel="stylesheet" href="https://assets.htmlacademy.org/css/profile.v236.css"><link rel="stylesheet" href="https://assets.htmlacademy.org/css/course.v246.css"><link rel="stylesheet" href="https://assets.htmlacademy.org/css/course-interface-light.v20.css"><link rel="stylesheet" href="https://assets.htmlacademy.org/css/course-interface-en.v2.css"><script src="https://assets.htmlacademy.org/js/sentry.js" data-sentry="3774884cc81746ed84c0ba7c5cd4ac7b" data-project="26" data-version="2"></script><link rel="stylesheet" href="/css/custom.css"><link rel="stylesheet" href="/css/cookies.css"><link rel="preload" as="script" href="https://assets.htmlacademy.org/js/general.v274.js"><title>Background Size, Step 2 — Frames and Backgrounds — HTML Academy</title><meta name="csrf-token" content="81764caf322823086fca37a7326b9bd2a54"><meta property="og:type" content="website"><meta property="og:site_name" content="HTML Academy"><meta name="twitter:url" property="og:url" content="https://htmlacademy.org"><meta name="twitter:title" property="og:title" content="Interactive online courses HTML Academy"><meta name="twitter:description" property="og:description" content="Together we’ll learn how to work with real code, solve true-to-life problems, use cutting edge technologies. 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Preparation</a></li><li class="main-nav__course-contents-item"><a href="/courses/advanced-styling/frames-and-backgrounds/background-size-1">2. Background Size, Step 1</a></li><li class="main-nav__course-contents-item main-nav__course-contents-item--current"><a href="/courses/advanced-styling/frames-and-backgrounds/background-size-2">3. Background Size, Step 2</a></li><li class="main-nav__course-contents-item"><a href="/courses/advanced-styling/frames-and-backgrounds/background-borders">4. Background Borders</a></li><li class="main-nav__course-contents-item"><a href="/courses/advanced-styling/frames-and-backgrounds/background-cropping">5. Background Cropping</a></li><li class="main-nav__course-contents-item"><a href="/courses/advanced-styling/frames-and-backgrounds/multiple-background-images">6. Multiple Background Images</a></li><li class="main-nav__course-contents-item"><a href="/courses/advanced-styling/frames-and-backgrounds/background-position">7. Positioning the background relative to different borders</a></li><li class="main-nav__course-contents-item"><a href="/courses/advanced-styling/frames-and-backgrounds/background-repeat-round">8. background-repeat: round</a></li><li class="main-nav__course-contents-item"><a href="/courses/advanced-styling/frames-and-backgrounds/background-repeat-space">9. background-repeat: space</a></li><li class="main-nav__course-contents-item"><a href="/courses/advanced-styling/frames-and-backgrounds/outer-frame">10. Outer Frame</a></li><li class="main-nav__course-contents-item"><a href="/courses/advanced-styling/frames-and-backgrounds/rounding-corners-1">11. Rounding Corners, Part 1</a></li><li class="main-nav__course-contents-item"><a href="/courses/advanced-styling/frames-and-backgrounds/rounding-corners-2">12. Rounding Corners, Part 2</a></li><li class="main-nav__course-contents-item"><a href="/courses/advanced-styling/frames-and-backgrounds/border-image-source">13. Frame Image: border-image-source</a></li><li class="main-nav__course-contents-item"><a href="/courses/advanced-styling/frames-and-backgrounds/border-image-slice">14. Frame Image: border-image-slice</a></li><li class="main-nav__course-contents-item"><a href="/courses/advanced-styling/frames-and-backgrounds/slicing-asymmetrical-images">15. Slicing Asymmetrical Images</a></li><li class="main-nav__course-contents-item"><a href="/courses/advanced-styling/frames-and-backgrounds/border-image-repeat-1">16. Frame Image: border-image-repeat, Part 1</a></li><li class="main-nav__course-contents-item"><a href="/courses/advanced-styling/frames-and-backgrounds/border-image-repeat-2">17. Frame Image: border-image-repeat, Part 2</a></li><li class="main-nav__course-contents-item"><a href="/courses/advanced-styling/frames-and-backgrounds/border-image-width">18. Frame Image: border-image-width</a></li><li class="main-nav__course-contents-item"><a href="/courses/advanced-styling/frames-and-backgrounds/border-image-outset">19. Frame Image: border-image-outset</a></li><li class="main-nav__course-contents-item"><a href="/courses/advanced-styling/frames-and-backgrounds/royal-frame">20. Muffin’s Royal Frame</a></li><li class="main-nav__course-contents-item"><a href="/courses/advanced-styling/frames-and-backgrounds/eco-frame">21. Muffin’s Eco-Frame</a></li><li class="main-nav__course-contents-item"><a href="/courses/advanced-styling/frames-and-backgrounds/round-frame-1">22. Muffin’s Round Frame, Part 1</a></li><li class="main-nav__course-contents-item"><a href="/courses/advanced-styling/frames-and-backgrounds/round-frame-2">23. Muffin’s Round Frame, Part 2</a></li><li class="main-nav__course-contents-item"><a href="/courses/advanced-styling/frames-and-backgrounds/challenge-1">24. Challenge: The Sea Wolf</a></li><li class="main-nav__course-contents-item"><a href="/courses/advanced-styling/frames-and-backgrounds/frames-triangles-1">25. Frames and Triangles, Part 1</a></li><li class="main-nav__course-contents-item"><a href="/courses/advanced-styling/frames-and-backgrounds/frames-triangles-2">26. Frames and Triangles, Part 2</a></li><li class="main-nav__course-contents-item"><a href="/courses/advanced-styling/frames-and-backgrounds/frames-triangles-3">27. Frames and Triangles, Part 3</a></li><li class="main-nav__course-contents-item"><a href="/courses/advanced-styling/frames-and-backgrounds/arrow-frame">28. Creating an Arrow with a Frame</a></li><li class="main-nav__course-contents-item"><a href="/courses/advanced-styling/frames-and-backgrounds/round-arrow-frame-1">29. Creating a Round Arrow with a Frame, Part 1</a></li><li class="main-nav__course-contents-item"><a href="/courses/advanced-styling/frames-and-backgrounds/round-arrow-frame-2">30. Creating a Round Arrow with a Frame, Part 2</a></li><li class="main-nav__course-contents-item"><a href="/courses/advanced-styling/frames-and-backgrounds/real-life-triangles-1">31. Real-Life Triangles, Part 1</a></li><li class="main-nav__course-contents-item"><a href="/courses/advanced-styling/frames-and-backgrounds/real-life-triangles-2">32. Real-Life Triangles, Part 2</a></li><li class="main-nav__course-contents-item"><a href="/courses/advanced-styling/frames-and-backgrounds/challenge-2">33. 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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">Background Size, Step 2</h1><div class="course-theory__content-text"><p>Two more values for the <code>background-size</code> property are <code>contain</code> and <code>cover</code>.</p><p>The <code>contain</code> value works like this:</p><ul><li>The image proportions are preserved.</li><li>The image is stretched to the maximum possible size so that it completely fills in the background boundaries in both width and height.</li><li>The image may not cover the entire background area of the block if the proportions of the image and the block are different.</li></ul><p>The <code>cover</code> value works differently:</p><ul><li>The image proportions are preserved;</li><li>The image is assigned the minimum possible dimensions that will allow it to cover the entire background area of the block;</li><li>if the dimensions of the image and the block are different, then part of the image is cropped.</li></ul><p>Let’s try out these values in practice.</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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