#scrollUp {
    background: var(--primary-color);
    height: 45px;
    width: 45px;
    inset-inline-end: 50px;
    bottom: 77px;
    color: #fff;
    text-align: center;
    border-radius: 50%;
    font-size: 22px;
    line-height: 45px;
    transition: 0.3s;
}

#scrollUp:hover {
    background: var(--primary-color);
}