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代码编辑器:
<!DOCTYPE html> <meta charset="utf-8"><link href="/static/next/css/tryit.css?v=2017082407" rel="stylesheet"/> <style> img { -webkit-animation: mymove 7s infinite; /* Chrome, Safari, Opera */ animation: mymove 7s infinite; } /* Chrome, Safari, Opera */ @-webkit-keyframes mymove { 50% { -webkit-filter: grayscale(100%); filter: grayscale(100%); } } /* Standard syntax */ @keyframes mymove { 50% { -webkit-filter: grayscale(100%); filter: grayscale(100%); } } </style> <p>逐步改变图片的背景颜色,从黑到白 (100% 灰阶):<p> <img src="pineapple.jpg" alt="Pineapple" width="300" height="300"> <p>filter 属性支持动画效果。</p> <p><b>注意:</b>Internet Explorer 9 及更早 IE 版本不支持 CSS 动画。</p> <footer>简单教程,简单编程<br/>Copyright © 简单教程 www.twle.cn</footer>
运行结果: