.container {
    padding: 40px 20px;
  }
  
  h1 {
    text-align: center;
    font-size: 28px;
    margin-bottom: 20px;
    color: #f4f4f9;
  }
  
  .images-container {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(200px, 1fr));
    gap: 20px;
    justify-items: center;
  }
  
  .image-card {
    position: relative;
    width: 100%;
    padding-top: 100%; /* Maintain square aspect ratio */
    background-color: #2c2c2c;
    border-radius: 10px;
    overflow: hidden;
  }
  
  .loading {
    text-align: center;
    font-size: 16px;
    color: #ffffff;
    display: none;
  }
  
  .image-card img {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    object-fit: cover;
    transition: opacity 0.3s ease;
  }
  
  .image-card img.lazyload {
    opacity: 0;
  }
  
  .image-card img.loaded {
    opacity: 1;
  }
  
  .download-btn {
    position: absolute;
    bottom: 10px;
    left: 10px;
    border: none;
    background-color: rgba(0, 0, 0, 0);
    padding: 15px;
    border-radius: 50%;
    cursor: pointer;
    transition: background-color 0.3s ease;
  }
  
  .download-btn img {
    width: 20px;
    height: 20px;
  }
  
  .download-btn:focus {
    outline: none;
  }