.scroll-top {
    position: fixed;
    right: 52px;
    bottom: 52px;
    z-index: 90;
    display: flex;
    align-items: center;
    justify-content: center;
    width: 56px;
    height: 56px;
    padding: 0;
    border: 0;
    border-radius: 50%;
    background-color: rgba(118, 118, 118, 1);
    color: #fff;
    cursor: pointer;
    opacity: 0;
    visibility: hidden;
    transform: translateY(12px);
    transition: opacity 0.25s ease, transform 0.25s ease, visibility 0.25s ease;
}

.scroll-top.is-visible {
    opacity: 1;
    visibility: visible;
    transform: translateY(0);
}

.scroll-top img {
    display: block;
    width: 20px;
    height: 20px;
}

@media (max-width: 720px) {
    .scroll-top {
        right: 20px;
        bottom: 20px;
        width: 48px;
        height: 48px;
    }

    .scroll-top img {
        width: 18px;
        height: 18px;
    }
}