/* ???????????? ???????????? */ 
.site-gray, .site-gray *{ 
    filter: gray !important; 
    filter: progid:DXImageTransform.Microsoft.BasicImage(grayscale=1); 
    filter: grayscale(100%); 
    -webkit-filter: grayscale(100%); 
    -moz-filter: grayscale(100%); 
    -ms-filter: grayscale(100%); 
    -o-filter: grayscale(100%);  
}