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<!DOCTYPE html> <html> <head> <style> #myDIV { width: 50%; background-color: lightblue; overflow: auto; border: 1px solid black; animation: mymove 5s infinite; } @keyframes mymove { 50% {min-width: 800px;} } </style> </head> <body> <h1>Animation of min-width</h1> <p>Change the min-width from "none" to 800px, and back to "none":<p> <p><strong>Note:</strong> The min-width property overrides the width property.</p> <div id="myDIV"> <p>This DIV element has a pre-defined width: 50%.</p> <p>An animation will gradually change the min-width to 800 pixels.</p> </div> </body> </html>
