#mask {position:fixed; left:0; top:0; z-index:9000; background:rgba(0,0,0,0.8); display:none; 
width:100%; height:100%;}  
#boxes .window {position:absolute; left:0; top:10%; width:600px; height:auto; 
display:none; z-index:9999;}
#boxes #dialog {width:800px; height:auto; padding:0;}

#boxes .close {position:absolute; right:-15px; top:-15px; width:32px; height:32px; background:#000;}
#boxes .close:before, #boxes .close:after {position:absolute; left:15px; content:''; height:20px;
 width:3px;  background:#fff; top:6px;}
.close:before {transform: rotate(45deg);}
.close:after {transform: rotate(-45deg);}