* { margin: 0; padding: 0; box-sizing: border-box; }
html, body { width: 100%; height: 100%; overflow: hidden; background: #050810; }
body { display: flex; align-items: center; justify-content: center; touch-action: none; -webkit-user-select: none; user-select: none; -webkit-tap-highlight-color: transparent; }
canvas { display: block; touch-action: none; }