#scrollTopBtn {
        position: fixed;
        bottom: 20px;
        right: 20px;
        z-index: 100;
        background: rgba(255, 255, 255, 0.25);
        backdrop-filter: blur(10px);
        -webkit-backdrop-filter: blur(10px);
        color: #333;
        border: 1px solid rgba(255, 255, 255, 0.3);
        padding: 15px;
        border-radius: 50%;
        font-size: 20px;
        cursor: pointer;
        box-shadow: 0 8px 15px rgba(0, 0, 0, 0.2);
        display: none;
        transition: transform 0.3s ease, background-color 0.3s ease;
      }

      #scrollTopBtn:hover {
        background: rgba(255, 255, 255, 0.4);
        transform: scale(1.1);
      }