#backToTop {
    position: fixed;
    bottom: 20px;
    right: 20px;
    width: 50px;
    height: 50px;
    background-color: #007cba;
    color: white;
    border: none;
    border-radius: 50%;
    font-size: 24px;
    cursor: pointer;
    display: none;
    z-index: 9999;
    transition: opacity 0.3s, visibility 0.3s;
    opacity: 0;
    visibility: hidden;
}

#backToTop.show {
    opacity: 1;
    visibility: visible;
}

#backToTop:hover {
    background-color: #005a87;
}