*{
            margin: 0px;
            padding: 0px;
            
        }
        #screen-window{
            width: 100vw;
            height: 100vh;
            overflow: hidden;
            position: absolute;
            top: 0px;
            left: 0px;
            background: #000;
            display: flex;
            align-items: center;

        }
        
        
        #screen-window img{
            width: 100%; 
            background: #fff;
            height: auto; 
            position: absolute;
        
        }
        
        .off {
        
            display: none;
        }