* { margin: 0; padding: 0; box-sizing: border-box; }
html, body { width: 100%; height: 100%; overflow: hidden; background: #0F0F14; }
#webcam { position: absolute; top: 0; left: 0; width: 0; height: 0; visibility: hidden; pointer-events: none; }
#canvas { position: absolute; top: 0; left: 0; width: 100%; height: 100%; }