.main-image {
      width: 100%;
      max-height: 700px;
      object-fit: contain;
      border: 1px solid #ddd;
      padding: 10px;
      
    }
    .thumbnail img {
      width: 200px;
      height: 100px;
      object-fit: cover;
      border: 1px solid #ddd;
      padding: 5px;
      cursor: pointer;
    }
    .thumbnail img.active {
      border: 2px solid #007bff;
    }