/*html{*/
    /*-webkit-filter: grayscale(100%);*/
    /*-moz-filter: grayscale(100%);*/
    /*-ms-filter: grayscale(100%);*/
    /*-o-filter: grayscale(100%);*/
    /*filter: grayscale(100%);*/
    /*!*兼容safari*!*/
    /*!*filter: url("data:image/svg+xml;utf8,<svg xmlns='http://www.w3.org/2000/svg'><filter id='grayscale'><feColorMatrix type='matrix' values='0.3333 0.3333 0.3333 0 0 0.3333 0.3333 0.3333 0 0 0.3333 0.3333 0.3333 0 0 0 0 0 1 0'/></filter></svg>#grayscale");*!*/
    /*!*ie用滤镜*!*/
    /*filter:progid:DXImageTransform.Microsoft.BasicImage(grayscale=1);*/
/*}*/
/*
body, html {
    -webkit-filter: grayscale(100%);
    -moz-filter: grayscale(100%);
    -ms-filter: grayscale(100%);
    -o-filter: grayscale(100%);
    filter: grayscale(100%);
    -webkit-filter: gray;
    filter: gray;
    filter: progid:DXImageTransform.Microsoft.BasicImage(grayscale=1);
}*/