#backToTopBtn {
    display: none;
    position: fixed;
    bottom: 20px;
    right: 30px;
    z-index: 99;
    border: 2px solid var(--primary-Light);
    outline: none;
    background-color: var(--secundary-Dark);
    color: var(--primary-Light);
    cursor: pointer;
    padding: 15px;
    border-radius: 100%;
    transition: background-color 0.5s ease, color 0.5s ease;
    font-size: 18px;

}

#backToTopBtn:hover {
    background-color: var(--primary-Light);
    color: var(--secundary-Dark);

}