.product-item{
    display: block;
    width: 100%;
    height: 400px;
    border: 1px solid #ccc;
    padding: 30px;
}
.product-item img{
    width: 100%;
    height: 100%;
    object-fit: scale-down;
}
.product-slider-thumbnail-item img{
    width: 100%;
    height: 80px;
    padding: 15px;
    border: 1px solid #ccc;
    object-fit: scale-down;
}

.product-slider-thumbnail.slick-slider {
    overflow: hidden;
}
/* the parent */
.product-slider-thumbnail .slick-list {
    margin: 0 -9px;
}
/* item */  
.product-slider-thumbnail .slick-slide{
    padding: 0 9px;
    cursor: pointer;
}

.product-slider-thumbnail .slick-prev {
    left: 0px;
    background: #fdb802;
    width: 30px;
    height: 30px;
}

.product-slider-thumbnail .slick-next {
    right: 0px;
    background: #fdb802;
    width: 30px;
    height: 30px;
}

.product-slider-thumbnail{
    margin-top: 20px;
}