.scroll-to-top {
    position: fixed;
    bottom: 30px;
    right: 30px;
    background: none;
    border: none;
    padding: 0;
    display: block;
    cursor: pointer;
    opacity: 0;
    transform: scale(0.5);
    transition: opacity 0.3s ease, transform 0.3s ease;
  }
  
  .scroll-to-top.show {
    opacity: 1;
    transform: scale(1);
  }
  
  .scroll-to-top img {
    width: 45px;
    height: 45px;
    display: block;
  }
  
  .scroll-to-top.show:hover {
    transform: scale(0.9);
  }
  
  @media (max-width: 768px) {
    .scroll-to-top {
      bottom: 20px;
      right: 20px;
    }
  }