彩色網頁變黑白色CSS代碼

<style> 

    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; 

    } 

</style>