padding: 8px 16px;
              cursor: pointer;
              transition: background-color 0.3s;
              font-size: 1rem;
            }
            .btn:hover {
              background-color: #3a85d8;
            }
            .test-section {
              background-color: #f5f7f9;
              border: 1px solid #e1e4e8;
              border-radius: 8px;
              padding: 15px;
              margin-top: 30px;
              margin-bottom: 30px;
            }
            .test-section h3 {
   