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<!DOCTYPE html> <html> <head> <style> #DIV1 { height: 200px; width: 200px; margin: auto; border: 1px solid black; } #DIV2 { width: 150px; height: 150px; border: 1px solid black; background-color: coral; scale: 1 1; animation: mymove 5s infinite; } @keyframes mymove { 50% {rotate: y 180deg;} } #DIV2original { position: absolute; width: 150px; height: 150px; border: 1px dashed grey; background-color: lightgrey; opacity: 0.5; } </style> </head> <body> <h1>Animation of rotate property</h1> <p>Gradually change the rotate property from "y 0deg" to "y 180deg", and back:<p> <p><b>Note: </b>The grey DIV element indicates where the DIV2 element would be without the change in rotate property.</p> <div id="DIV1">DIV1 <div id="DIV2original">DIV2</div> <div id="DIV2">DIV2</div> </div> </body> </html>