body{font-family:Arial,sans-serif;margin:0;padding:0;background-color:#f4f4f4}.container{max-width:500px;margin:0 auto;padding:20px}h1{font-size:24px;font-weight:700;margin-bottom:20px;color:#333}.input-group{margin-bottom:20px}input[type=text]{width:100%;padding:10px;border:1px solid #ccc;border-radius:4px;font-size:16px}button{margin-top:10px;padding:10px 20px;background-color:#007bff;color:#fff;border:none;border-radius:4px;cursor:pointer;font-size:16px}button:hover{background-color:#0056b3}ul{list-style:none;padding:0}li{padding:10px;background-color:#e9ecef;border-radius:4px;margin-bottom:10px;word-wrap:break-word}