.materials-section {
      /* background-color: #d8e6f5; */
      color: #fff;
      padding: 80px 0;
      position: relative;
      background-attachment: fixed;
      background-size: cover;



  }

  .section-title {
      color: #163555;
      font-size: 36px;
      margin-bottom: 50px;
      position: relative;
      z-index: 5;
  }

  .material-card {
      background-color: white;
      padding: 20px;
      border-radius: 10px;
      margin-bottom: 30px;
      text-align: center;
      transition: background-color 0.3s ease;
      position: relative;
      z-index: 5;
  }

  .material-card:hover {
      background-color: #d8e6f5;
  }

  .material-card h3 {
      color: #007bff;
  }

  .material-card p {
      color: #000;
      font-size: 18px;
  }

  .background-overlay {
      position: absolute;
      top: 0;
      left: 0;
      width: 100%;
      height: 100%;
      background-color: rgba(163, 155, 196, 0.8);
      z-index: 4;
      /* Adjust opacity as needed */
  }