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<!DOCTYPE html> <html> <head> <style> #myDIV { position: absolute; top: 200px; width: 300px; height: 150px; background-color: lightblue; border: 1px solid black; animation: mymove 5s infinite; } #DIV2 { position: absolute; top: 180px; left: 30px; width: 300px; height: 150px; background-color: coral; border: 1px solid black; } @keyframes mymove { 50% {opacity: 0;} } </style> </head> <body> <h1>Animation of opacity</h1> <p>The opacity property is <em>animatable</em> in CSS.</p> <p>Change the opacity of the blue DIV element from 1 to 0, and back to 1:<p> <div id="DIV2"> <h1>Voila!</h1> </div> <div id="myDIV"> </div> </body> </html>
