body{display:block;margin:0;background-color:#111;height:100vh}#countdown{width:100%;height:100%;z-index:9}#player1{display:block;position:absolute;margin:0 auto;width:100%;height:100%;filter:grayscale(var(--grayscale-filter, 1));opacity:1}#player2,#player3{display:block;position:absolute;margin:0 auto;width:100%;height:100%;filter:grayscale(var(--grayscale-filter, 1));opacity:0}shader-doodle{display:block;position:absolute;margin:0 auto;width:100%;height:100%;opacity:.5}#debug-overlay{position:fixed;top:20px;left:20px;z-index:10000;font-size:48px;font-weight:700;color:red;background:#000c;padding:10px 20px;border-radius:10px;font-family:monospace}