*{box-sizing:border-box;margin:0;padding:0}body{background:#000;overflow:hidden}#root{width:100%;min-height:100vh}.game-container{background:#000;justify-content:center;align-items:center;min-height:100vh;display:flex}.game-wrapper{width:800px;height:480px;position:relative}.game-wrapper canvas{display:block}@keyframes pulse{0%,to{opacity:.3}50%{opacity:1}}