.arrow-next, .arrow-prev {
    position: absolute;
    top: 41%;
    display: block;
    width: 40px;
    height: 41px;
    margin-top: -10px;
    padding: 0;
    cursor: pointer;
    color: #ffffff;
    border: 0;
    z-index: 999;
    font-size: 24px;
}

.arrow-next {
    right: 0px;
}

.arrow-prev {
    left: 98%;
}