.gallery-container {
    display: flex;
    flex-wrap: wrap;
    justify-content: space-around;
  }
  
  .gallery-item {
    margin: 10px;
    cursor: pointer;
  }
  
  .lightbox {
    display: none;
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: rgba(0, 0, 0, 0.9);
    justify-content: center;
    align-items: center;
  }
  
  .lightbox img {
    max-width: 80%;
    max-height: 80%;
  }
  
  .close-btn {
    position: absolute;
    top: 10px;
    right: 10px;
    color: #fff;
    font-size: 20px;
    cursor: pointer;
  }