html,body{height:100%;margin:0;font-family:Segoe UI,Tahoma,Geneva,Verdana,sans-serif;background:linear-gradient(135deg,#f0f4f8,#d9e2ec);display:flex;justify-content:center;align-items:center;color:#1f2937}.container{text-align:center;background:#ffffffb3;padding:3rem 4rem;border-radius:12px;box-shadow:0 8px 24px #0000001a}h1{font-size:3rem;margin-bottom:2rem}button{font-size:1.25rem;padding:.75rem 2rem;border:none;border-radius:8px;background-color:#24292f;color:#fff;cursor:pointer;transition:background-color .2s ease-in-out}button:hover{background-color:#57606a}