body{font-family:Arial;background:#f5f5f5}.container{max-width:600px;margin:auto;padding:20px}.option{display:flex;justify-content:space-between;padding:12px;margin:10px 0;border-radius:10px;border:1px solid #ccc;cursor:pointer;background:#fff}.option.correct{background-color:#d4edda}.option.wrong{background-color:#f8d7da}.badge{background:#333;color:#fff;border-radius:50%;padding:6px 10px}.submit,.next{margin-top:20px;padding:12px 20px;border-radius:20px;background:#a8d5ba;border:none;cursor:pointer}.explanation{margin-top:15px}.result{text-align:center;margin-top:100px}