body{margin:0;font-family:-apple-system,BlinkMacSystemFont,Segoe UI,Roboto,Oxygen,Ubuntu,Cantarell,Fira Sans,Droid Sans,Helvetica Neue,sans-serif;-webkit-font-smoothing:antialiased;-moz-osx-font-smoothing:grayscale;background-color:#101418;color:#ecf0f1;display:flex;justify-content:center;align-items:center;min-height:100vh}#app{display:flex;padding:12px;border:2px outset #25394c;background-color:#252f3b;flex-direction:column;justify-content:center;align-items:center}canvas{background-color:#000;outline:none}h1{margin:0 0 16px}