body{font-family:Arial,sans-serif;margin:0;padding:20px}form{max-width:400px;margin:0 auto;display:flex;flex-direction:column;gap:10px}input,button{padding:8px;font-size:16px}button{background-color:#007bff;color:#fff;border:none;cursor:pointer}button:hover{background-color:#0056b3}