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<!DOCTYPE html> <html> <head> <style> #myDIV { background-color: lightblue; overflow: auto; border: 1px solid black; animation: mymove 5s infinite; } @keyframes mymove { 50% {max-width: 600px;} } </style> </head> <body> <h1>Animation of max-width</h1> <p>Change the max-width from "none" to "600px", and back to "none":<p> <div id="myDIV"> <p>This DIV element does not have a pre-defined width.</p> <p>Try resizing the browser window to see that width of this DIV element will grow/shrink along width the resizing, but it will never exceed 600 pixels in width.</p> </div> </body> </html>
