body{margin:0;background:#0b0b0b;color:#fff;font-family:Arial,sans-serif;display:flex;min-height:100vh;flex-direction:column;justify-content:center;align-items:center;text-align:center}h1{letter-spacing:.35em}button{margin-top:20px;padding:14px 28px;background:transparent;border:1px solid #fff;color:#fff}main{animation:f 1.2s}@keyframes f{from{opacity:0;transform:translateY(12px)}to{opacity:1;transform:none}}footer{position:fixed;bottom:20px;color:#888}