:root{font-family:Courier New,monospace;background:radial-gradient(circle at 50% 20%,#2b0066,#0b1b2a 60%,#03060d);color:#12ff96;min-height:100%}*{box-sizing:border-box}body{margin:0;min-height:100vh;display:flex;align-items:center;justify-content:center}#app{width:100%;height:100vh;display:flex;align-items:center;justify-content:center}