.back--to-top-arrow {
    position: fixed;
    bottom: 2rem;
    right: 2rem;
    width: 50px;
    height: 50px;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    z-index: 1000;
    transition: opacity 0.3s, visibility 0.3s;
    opacity: 0;
    visibility: hidden;
}

.back--to-top-arrow.visible {
    opacity: 1;
    visibility: visible;
}

.back--to-top-arrow .arrow--icon {
    stroke: var(--white);
}