网站首页黑白灰色样式

<style>
        html {
          -webkit-filter: grayscale(100%); /* webkit */
          -moz-filter: grayscale(100%); /*firefox*/
          -ms-filter: grayscale(100%); /*ie9*/
          -o-filter: grayscale(100%); /*opera*/
          filter: grayscale(100%);
          filter:progid:DXImageTransform.Microsoft.BasicImage(grayscale=1);
        }
        body{
          filter:gray; /*ie9- */
          background : none!important;
        }
      </style>