#scrollToTopBtn {
    position: fixed;
    bottom: 30px;
    right: 30px;
    z-index: 100;
    background-color: #37BDF8;
    color: #333;
    border: none;
    padding: 10px 14px;
    border-radius: 50%;
    cursor: pointer;
    font-size: 20px;
    display: none;
    box-shadow: 0 0 5px 2px #37bef8d1;
    transition: opacity 0.3s ease;
  }
  
  #scrollToTopBtn:hover {
    background-color: #f9f9f9;
    svg {
      transform: rotate(360deg);
      transition: transform 0.5s ease;
    }
  }