body{margin:0;background:#f5f7fa;color:#202938;font:16px/1.6 system-ui,sans-serif}main{max-width:640px;margin:64px auto;padding:32px;background:#fff;border:1px solid #dce2eb;border-radius:12px;overflow-wrap:anywhere}h1{font-size:32px}button{padding:12px 20px;background:#165bb5;color:#fff;border:0;border-radius:6px;font:inherit;cursor:pointer}button:disabled{opacity:.5;cursor:default}@media(max-width:700px){main{margin:16px;padding:24px}}