网页变成 黑白色 兼容个浏览器

html { 

            -webkit-filter: grayscale(100%); 

           -moz-filter: grayscale(100%); 

           -ms-filter: grayscale(100%); 

           -o-filter: grayscale(100%); 

           filter:progid:DXImageTransform.Microsoft.BasicImage(grayscale=1);  

            _filter:none;

 }