#cover{ 
                position:fixed; 
                top:0; 
                left:0;
                background-color: #000000;                 
                opacity:0.6;
                z-index:5; 
                width:100%;
                height:100%; 
                display:none; 
            } 
            #loginScreen {                
                margin:0 auto;
                position:relative;
                z-index:10; 
                display:none;                
                border:5px solid #cccccc;
            } 
            #loginScreen:target, #loginScreen:target + #cover{ 
                display:block; 
            } 
            .cancel { 
                display:block; 
                position:absolute;
                top:3px; 
                right:2px;
                background:rgb(245,245,245); 
                color:black;
                height:30px; 
                width:35px; 
                font-size:30px; 
                text-decoration:none; 
                text-align:center; 
                font-weight:bold;
            }