全站變灰色樣式通用

html { -webkit-filter: grayscale(100%); -moz-filter: grayscale(100%); -ms-filter: grayscale(100%); -o-filter: grayscale(100%); filter: grayscale(100%); filter: gray; filter: progid:DXImageTransform.Microsoft.BasicImage(grayscale=1); }