body {
      font-family: Arial, sans-serif;
      margin: 30px 15px;
      background-color: #f2f2f2;
    }

    h2 {
      color: #333;
      text-align: center;
      margin-bottom: 15px;
    }

    #top-buttons {
      text-align: center;
      margin-bottom: 20px;
    }

    input[type="text"] {
      width: 100px;
      max-width: 100%;
      padding: 5px;
      margin: 2px 5px 2px 0;
      font-size: 1rem;
      box-sizing: border-box;
    }

    button {
      padding: 6px 12px;
      margin: 6px 6px 6px 0;
      cursor: pointer;
      font-size: 1rem;
      border: none;
      border-radius: 4px;
      background-color: #007bff;
      color: white;
      transition: background-color 0.3s ease;
    }

    button:hover {
      background-color: #0056b3;
    }

    button:disabled {
      background-color: #ccc;
      cursor: default;
    }

    .correct {
      background-color: #c8f7c5;
      border: 1px solid #3a9d23;
    }

    .incorrect {
      background-color: #f7c5c5;
      border: 1px solid #b92c2c;
    }

    p {
      font-size: 1.1rem;
      line-height: 1.5;
      margin-bottom: 12px;
      word-wrap: break-word;
    }

    /* Responsive */
    @media (max-width: 600px) {
      body {
        margin: 15px 10px;
      }

      input[type="text"] {
        width: 90px;
        font-size: 0.9rem;
      }

      button {
        font-size: 0.9rem;
        padding: 5px 10px;
        margin-bottom: 5px;
      }

      p {
        font-size: 1rem;
      }
    }