{
      background: #ffe6e6;
      padding: 1.2rem;
      border-radius: 10px;
      margin-top: 2rem;
      box-shadow: 0 4px 12px rgba(0,0,0,0.1);
      text-align: center;
    }
    .quiz-box strong {
      color: #d32f2f;
    }

    .top-btn {
      position: fixed;
      left: 20px;
      bottom: 30px;
      background-color: #f1c40f;
      color: black;
      border: none;
      padding: 12px 20px;
      border-radius: 30px;
      font-size: 16px;
      font-weight: bold;
      cursor: pointer;
      