一行代码实现网站变黑白效果

 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);" }="" ="" <="" p="">

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);" }="" ="" <="" p="">