#root{position:absolute;top:0;left:0;width:100%;height:100%;border:none;overflow:hidden}.buttons{position:absolute;top:0;left:0;z-index:10}footer{position:absolute;color:#fff;opacity:50%;bottom:0;left:0;margin-left:50%;transform:translate(-50%)}.progress{position:absolute;background-color:#000;color:#fff;z-index:15}