.slick-arrow
{
    z-index: 1;
}
button.slick-prev
{
    left:0px;
}
button.slick-next
{
    right:40px;
}
.slick-prev:before,
.slick-next:before
{
    color: rgba(0,0,0,0.15);
    font-size: 60px;
}