.header{font-size:3em;color:#fff;background:#404040;text-align:center;height:2.5em;text-shadow:4px 4px 4px black;display:flex;justify-content:center;align-items:center}#error{font-size:2em;color:red;height:50px;text-shadow:2px 2px 2px black;margin:2em;display:none}.container{display:flex;justify-content:center;align-items:center;flex-direction:column}.visible{display:block}#target{width:100%!important;height:100%!important;position:absolute}body{display:block;background:#000;margin:0;padding:0;overscroll-behavior:none}