#backToTop {
      position: fixed;
      bottom: 5px;
      margin-right: 3.5px;
      right: 0;
      width: 25px;
      height: 25px;
      background: #8B4513;
      border: none;
      border-radius: 10%;
      cursor: pointer;
      display: flex;
      align-items: center;
      justify-content: center;
      z-index: 1000;
      opacity: 0.7;
      transition: opacity 0.3s ease;
    }
    #backToTop:hover {
      opacity: 1;
    }
    #backToTop svg {
      fill: #fff;
      width: 24px;
      height: 24px;
    }