:root{color-scheme:dark;background:#08110e}*{box-sizing:border-box}html,body,#app{margin:0;padding:0;width:100%;height:100%;overflow:hidden}#viewer{position:fixed;top:0;right:0;bottom:0;left:0;width:100%;height:100dvh;background-color:#08110e;background-size:cover;background-position:center;touch-action:none;cursor:none;user-select:none;-webkit-user-select:none}#viewer canvas{display:block;width:100%;height:100%}