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CSS 可动画属性
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<!DOCTYPE html> <html> <head> <style> #myDIV { width: 300px; height: 200px; border: 1px solid black; background-image: url('/demo/images/w3css.gif'); background-size: 20px 20px; animation: mymove 5s infinite; } @keyframes mymove { 50% {background-size: 125px 125px;} } </style> </head> <body> <h1>Animation of background-size</h1> <p>Gradually change the background-size from "10px 10px" to "125px 125px", and back:<p> <div id="myDIV"></div> </body> </html>