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<html><head><style> #myDIV { position: absolute; width: 100px; height: 100px; background-color: coral; color: white; top: 0; animation: mymove 5s infinite;}@keyframes mymove { 50% {top: 300px;}}</style></head><body><h1>Animation of top</h1><p>Gradually change the top property from 0 to 300px, then back to 0:<p><div id="myDIV"> <h1>myDIV</h1></div></body></html>