What are CSS Transitions?



With the transition effect, you can easily change the property values. You can also set a duration.

Let us try to change the height of an element:

Example

Live Demo

<!DOCTYPE html>
<html>
   <head>
      <style>
         div {
            width: 150px;
            height: 150px;
            background: blue;
            transition: width 3s;
         }
         div:hover {
            height: 200px;
         }
      </style>
   </head>
   <body>
      <h1>Heading One</h1>
      <p>Hover over the below box to change its height.</p>
      <div></div>
   </body>
</html>

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