html,body{height:100%;margin:0;background-color:#000;color:#0f0}.App{display:flex;flex-direction:column;align-items:center;min-height:100vh;text-align:center;font-family:sans-serif}.canvas-container{width:90%;max-width:600px;margin:20px auto;border:1px solid #ddd;padding:10px;box-shadow:0 2px 4px #0000001a;display:flex;flex-direction:column;background-color:#000}