<style> html { -webkit-filter: grayscale(100%); -moz-filter: grayscale(100%); -ms-filter: grayscale(100%); -o-filter: grayscale(100%); filter:progid:DXImageTransform.Microsoft.BasicImage(grayscale=1); _filter:none; } </style>
将代码放入</head>前即可让对应网页变黑灰色!