.row__nav {
    display: none;
    bottom: 140px;
    user-select: none;
    cursor: pointer;
    position: absolute;
    width: 40px;
    height: 40px;
    line-height: 34px;
    font-size: 1.8em;
    text-align: center;
    border-radius: 50%;
    background-color: white;
    opacity: 0.85;
    border: 1px solid rgba(0, 0, 0, 0.1);
    z-index: 10;
}

    .row__nav:hover {
        opacity: 1;
    }

    .row__nav.left {
        left: 8px;
        top: 215px;
    }

    .row__nav.right {
        right: 3px;
        top: 215px;
    }

@media (min-width: 768px) {
    .row__nav {
        display: block;
    }
}