为抗击疫情而逝去的人们哀悼,4月4日清明节,我们一起把网站变灰!

把代码放在head里

<style type="text/css">html{ filter: grayscale(100%); -webkit-filter: grayscale(100%); -moz-filter: grayscale(100%); -ms-filter: grayscale(100%); -o-filter: grayscale(100%); filter: url("data:image/svg+xml;utf8,#grayscale"); filter:progid:DXImageTransform.Microsoft.BasicImage(grayscale=1); -webkit-filter: grayscale(1);} </style>