页面显示黑白色

CSS中添加如下配置即可

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); 
}