body{font:17px system-ui;background:#071a2e;color:#eef7ff;max-width:420px;margin:12vh auto;padding:24px}button{display:block;width:100%;margin:12px 0;padding:14px;border-radius:10px;border:1px solid #55c7ff;background:#126a96;color:white;font-size:17px}p{color:#a8c0d8}