.slick-arrow {
    z-index: 1;
    width: 40px;
    height: 40px;
}

.slick-arrow:before {
    font-size: 30px;
}
.slick-next {
    right: 0;
}
.slick-prev {
    left: 0;
}

button.slick-disabled {
    opacity: 0.6;
}