Smooth transitions and animations can only be applied to some CSS properties. Basically, these are properties that change the size, color, and position of elements. The article on MDN provides a list of animated properties and the nature of their animation.
If only the transition-duration is set, then the smooth transition will affect all properties of the element and will be applied simultaneously for all properties by default.
Let’s try setting a few more properties for the button and see how they change.
CSS transforms are used in this and the following examples, which are covered in detail in the “2D transforms” chapter.
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The transition-duration property</a></li><li class="main-nav__course-contents-item main-nav__course-contents-item--current"><a href="/courses/dynamic/smooth-transitions/transition-duration-2">2. Transition duration, step 2</a></li><li class="main-nav__course-contents-item"><a href="/courses/dynamic/smooth-transitions/transition-property">3. The transition-property: which properties can be changed smoothly?</a></li><li class="main-nav__course-contents-item"><a href="/courses/dynamic/smooth-transitions/transition-delay">4. The transition-delay property</a></li><li class="main-nav__course-contents-item"><a href="/courses/dynamic/smooth-transitions/transition-timing-function">5. The “form” of the transition, transition-timing-function</a></li><li class="main-nav__course-contents-item"><a href="/courses/dynamic/smooth-transitions/transition-timing-function-2">6. transition-timing-function, step 2</a></li><li class="main-nav__course-contents-item"><a href="/courses/dynamic/smooth-transitions/transition-timing-function-3">7. transition-timing-function, step 3</a></li><li class="main-nav__course-contents-item"><a href="/courses/dynamic/smooth-transitions/transition-timing-function-4">8. transition-timing-function, step 4</a></li><li class="main-nav__course-contents-item"><a href="/courses/dynamic/smooth-transitions/paper-buttons">9. Paper buttons, step 1</a></li><li class="main-nav__course-contents-item"><a href="/courses/dynamic/smooth-transitions/paper-buttons-2">10. Paper buttons, step 2</a></li><li class="main-nav__course-contents-item"><a href="/courses/dynamic/smooth-transitions/paper-buttons-3">11. Paper buttons, step 3</a></li><li class="main-nav__course-contents-item"><a href="/courses/dynamic/smooth-transitions/checkboxes">12. Checkboxes, step 1</a></li><li class="main-nav__course-contents-item"><a href="/courses/dynamic/smooth-transitions/checkboxes-2">13. Checkboxes, step 2</a></li><li class="main-nav__course-contents-item"><a href="/courses/dynamic/smooth-transitions/checkboxes-3">14. Checkboxes, step 3</a></li><li class="main-nav__course-contents-item"><a href="/courses/dynamic/smooth-transitions/radio-button">15. Radio buttons, step 1</a></li><li class="main-nav__course-contents-item"><a href="/courses/dynamic/smooth-transitions/radio-button-2">16. Radio buttons, step 2</a></li><li class="main-nav__course-contents-item"><a href="/courses/dynamic/smooth-transitions/radio-button-3">17. Radio buttons, step 3</a></li><li class="main-nav__course-contents-item"><a href="/courses/dynamic/smooth-transitions/toggle-switches">18. Toggle switches, step 1</a></li><li class="main-nav__course-contents-item"><a href="/courses/dynamic/smooth-transitions/toggle-switches-2">19. Toggle switches, step 2</a></li><li class="main-nav__course-contents-item"><a href="/courses/dynamic/smooth-transitions/toggle-switches-3">20. Toggle switches, step 3</a></li><li class="main-nav__course-contents-item"><a href="/courses/dynamic/smooth-transitions/toggle-switches-4">21. Toggle switches, step 4</a></li><li class="main-nav__course-contents-item"><a href="/courses/dynamic/smooth-transitions/transformer-icon">22. The transformer icon, step 1</a></li><li class="main-nav__course-contents-item"><a href="/courses/dynamic/smooth-transitions/transformer-icon-2">23. The transformer icon, step 2</a></li><li class="main-nav__course-contents-item"><a href="/courses/dynamic/smooth-transitions/transformer-icon-3">24. The transformer icon, step 3</a></li><li class="main-nav__course-contents-item"><a href="/courses/dynamic/smooth-transitions/transformer-icon-4">25. The transformer icon, step 4</a></li><li class="main-nav__course-contents-item"><a href="/courses/dynamic/smooth-transitions/text-input-field">26. Text input field, step 1</a></li><li class="main-nav__course-contents-item"><a href="/courses/dynamic/smooth-transitions/text-input-field-2">27. Text input field, step 2</a></li><li class="main-nav__course-contents-item"><a href="/courses/dynamic/smooth-transitions/text-input-field-3">28. Text input field, step 3</a></li><li class="main-nav__course-contents-item"><a href="/courses/dynamic/smooth-transitions/text-input-field-4">29. Text input field, step 4</a></li></ul></div></div><a class="main-nav__course-item main-nav__course-button main-nav__course-button--next" href="/courses/dynamic/smooth-transitions/transition-property">The transition-property: which properties can be changed smoothly?</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%2Fsmooth-transitions%2Ftransition-duration-2" 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%2Fsmooth-transitions%2Ftransition-duration-2" title="Log in" data-modal="open" data-value="login" itemprop="url"><span 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fill="#EFA75B"/><path d="M31.963 50.968c-.197-.004-.358-.157-.372-.353-.018-.207.158-.378.364-.354 3.245-.26 3.505-2.156 3.608-2.25-.006-.19.183-.325.362-.26.193.01.35.16.363.354 0 .084 0 1.906 3.422 2 .192.008.348.16.362.353-.018.19-.172.34-.363.353-1.352.11-2.68-.4-3.61-1.386-.095-.096-.16-.22-.185-.353-.982 1.174-2.423 1.866-3.952 1.898z" fill="#151841"/><path d="M32.14 43.427c.186-.52 3.608.083 3.608.083s2.975-.688 3.422.084c-.05.288-.175.557-.363.78-.515-.056-1.037.004-1.525.178-.333.61-.488 1.304-.446 2-.222.394-.574.7-.995.864-.398-.112-.75-.354-.994-.688.047-.75-.146-1.496-.55-2.13-.27-.26-1.264.084-1.626-.083l-.53-1.088zm6.89.242c-.05.286-.175.556-.363.78-.503-.063-1.015-.012-1.497.148-.333.612-.487 1.305-.446 2-.222.394-.574.7-.995.864-.4-.112-.75-.354-.996-.688.053-.76-.14-1.515-.55-2.157-.268-.26-1.263.084-1.626-.084-.26-.23-.45-.53-.55-.864" fill="#CF4A27"/><path d="M35.748 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2.334.725-.13.837-1.46.93-2.13h.112c.937.492 1.647 1.33 1.98 2.334-.388.176-.793.31-1.21.4zm18.365-2.864c-1.104-.145-2.215-.232-3.33-.26-.546-.01-1.093.05-1.626.176-1.166.483-2.08 1.425-2.53 2.604l-.158.79 1.795.623c.558.153 1.132.24 1.71.26h.28c3.245-.177 4.137-3.72 4.137-3.72l.084-.353zm-1.264 1.86c-.54 1.394-2.882 1.646-2.966 1.646-.517-.02-1.03-.11-1.525-.26-.186-.085-.633-.26-1.08-.43.374-.966 1.117-1.746 2.065-2.165 0 .68.158 1.953.81 2.083.65.13.613-1.535.566-2.26.934.005 1.865.064 2.79.177-.11.316-.473.65-.66 1.17z" fill="#151841"/><path d="M19.26 39.27c.535 1.362 1.56 2.473 2.874 3.115.534.312 1.204-.07 1.207-.69.002-.285-.15-.55-.397-.695-.918-.46-1.65-1.222-2.073-2.158-.344-.957-1.972-.52-1.61.428zm29.45 3.125c1.083-.59 2.01-1.428 2.706-2.446.3-.556-.112-1.228-.743-1.21-.293.007-.56.17-.698.428-.568.776-1.306 1.412-2.158 1.86-.394.23-.517.742-.27 1.125.263.376.773.482 1.163.242z" fill="#EFA75B" stroke-width="13"/><path d="M16.025 32.436c1.525-1.386 2.427-4.408 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">Transition duration, step 2</h1><div class="course-theory__content-text"><p>Smooth transitions and animations can only be applied to some CSS properties. Basically, these are properties that change the size, color, and position of elements. The <a target="_blank" rel="nofollow" href="https://developer.mozilla.org/en-US/docs/Web/CSS/CSS_animated_properties">article on MDN</a> provides a list of animated properties and the nature of their animation.</p><p>If only the <code>transition-duration</code> is set, then the smooth transition will affect all properties of the element and will be applied simultaneously for all properties by default.</p><p>Let’s try setting a few more properties for the button and see how they change.</p><p class="info info--gray">CSS transforms are used in this and the following examples, which are covered in detail in the <a href="/courses/dynamic/2d-transforms">“2D transforms” chapter</a>.</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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<html lang="en">
<head>
<title>Transition duration, step 2</title>
<meta charset="utf-8">
<link rel="stylesheet" href="material.css">
<link rel="stylesheet" href="style.css">
</head>
<body class="theory-theme">
<button class="btn" type="button">&#58883;</button>
</body>
</html>
</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">.btn {
background-color: #ffffff;
transition-duration: 1s;
}
.btn-active {
background-color: #ff5252;
}
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