html,body{margin:0;min-height:100%;background:#071326;color:white;font-family:Arial,sans-serif}main{min-height:100vh;display:grid;place-content:center;text-align:center;background:radial-gradient(circle at top,#283276,#071326 70%)}h1{font-size:56px;color:#ffd25a;text-shadow:0 8px #4b2500}button{font-size:32px;font-weight:900;padding:20px 70px;border-radius:28px;border:0;background:linear-gradient(#ffe171,#d88c08);color:#251600;box-shadow:0 12px #663700}