body{font-family:Arial,sans-serif;margin:0;padding:0;background-color:#f4f4f4}h1,h2,h3{color:#333}input{padding:10px;margin:5px 0;border:1px solid #ccc;border-radius:4px}button{padding:10px 15px;background-color:#007bff;color:#fff;border:none;border-radius:4px;cursor:pointer}button:hover{background-color:#0056b3}