.left-scroller {
    height: 48px;
    width: 48px;

    position: fixed;
    bottom: 20%;
    right: 2%;

    display: none;

    z-index: 100;
}

.scroller-arrow-up {
    height: 100%;
    width: 100%;

    cursor: pointer;

    box-shadow: 0px 0px 40px -10px #000000;
    border-radius: 50%;

    background: url('/images/icons/arrow-blue-.png') no-repeat;
    background-size: cover;
}

.scroller-arrow-up:hover {
    background-image: url("/images/icons/arrow-red-.png");
}