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<!DOCTYPE html> <html> <head> <style> #myDIV { width: 500px; background-color: lightblue; overflow: auto; border: 1px solid black; animation: mymove 5s infinite; } @keyframes mymove { 50% {max-height: 100px;} } </style> </head> <body> <h1>Animation of max-height</h1> <p>Change the max-height from "none" to "100px", and back to "none":<p> <div id="myDIV"> <p>This DIV element does not have a pre-defined height.</p> <p>An animation will change the max-height, from "none" to "100px".</p> <p>The height of this DIV element will not exceed 100 pixels.</p> </div> </body> </html>
