网页黑白样式：
html{ -webkit-filter: grayscale(100%); -moz-filter: grayscale(100%); -ms-filter: grayscale(100%); -o-filter: grayscale(100%); filter: grayscale(100%); filter:progid:DXImageTransform.Microsoft.BasicImage(grayscale=1); _filter:none; filter: gray; }
还可以直接：
<html lang="en" style="filter: progid:DXImageTransform.Microsoft.BasicImage(grayscale=1);-webkit-filter: grayscale(100%);">