WooCommerce Product Slider Vertical Styling. The CSS code will make your slider vertical aligned. This code will enable product gallery slider: https://gist.github.com/zeshanshani/5e634af86e49ce07c87b44728c62f64b

wc-product-slider-vertical-styling.css

/* ==================================== */
/* WooCommerce Product Image Slider */
/* This code will enable product gallery slider: */
/* gist.github.com/zeshanshani/5e634af86e49ce07c87b44728c62f64b */
/* ==================================== */

.woocommerce .woocommerce-product-gallery.woocommerce-product-gallery--with-images {
  padding-left: 115px;
  box-sizing: border-box;
  position:  relative;
}

.woocommerce .woocommerce-product-gallery.woocommerce-product-gallery--with-images figure {
  margin-left: 0;
  margin-right: 0;
}

/* Flex Viewport */
.woocommerce .woocommerce-product-gallery.woocommerce-product-gallery--with-images .flex-viewport {
  float: right;
  width: 100%;
}

.woocommerce .woocommerce-product-gallery.woocommerce-product-gallery--with-images .flex-viewport .woocommerce-product-gallery__image,
.woocommerce .woocommerce-product-gallery.woocommerce-product-gallery--with-images .flex-viewport .woocommerce-product-gallery__image:not(:first-child) {
  padding: 0;
}

/* Flex Nav */
.woocommerce .woocommerce-product-gallery.woocommerce-product-gallery--with-images .flex-control-nav {
  float: left;
  width: 100px;
  position: absolute;
  left: 0;
  top: 0;
  height:  100%;
  overflow: scroll;
}

.woocommerce .woocommerce-product-gallery.woocommerce-product-gallery--with-images .flex-control-nav li {
  margin-bottom: 10px;
}

.woocommerce .woocommerce-product-gallery.woocommerce-product-gallery--with-images .flex-control-nav img {
  opacity: 0.7;
}

.woocommerce .woocommerce-product-gallery.woocommerce-product-gallery--with-images .flex-control-nav .flex-active {
  opacity: 1;
  border: 2px solid #000;
  max-width: 96px;
}

@media only screen and (max-width: 767px) {
  .woocommerce .woocommerce-product-gallery.woocommerce-product-gallery--with-images {
    padding-left: 0;
  }

  .woocommerce .woocommerce-product-gallery.woocommerce-product-gallery--with-images .flex-viewport {
    float: none;
  }

  .woocommerce .woocommerce-product-gallery.woocommerce-product-gallery--with-images .flex-control-nav {
    float: none;
    position: relative;
    margin-top: 15px;
    width: 100%;
  }

  .woocommerce .woocommerce-product-gallery.woocommerce-product-gallery--with-images .flex-control-nav {
    margin-left: -5px;
    margin-right: -5px;
  }

  .woocommerce .woocommerce-product-gallery.woocommerce-product-gallery--with-images .flex-control-nav li {
    display: inline-block;
    vertical-align: middle;
    padding: 0px 5px;
  }
}

/* Direction Nav */
.woocommerce .woocommerce-product-gallery.woocommerce-product-gallery--with-images ul.flex-direction-nav {
  position: absolute;
  top: 50%;
  width: 100%;
  left: 0;
  box-sizing:  border-box;
}

.woocommerce .woocommerce-product-gallery.woocommerce-product-gallery--with-images ul.flex-direction-nav .flex-nav-prev {
  float: left;
}

.woocommerce .woocommerce-product-gallery.woocommerce-product-gallery--with-images ul.flex-direction-nav .flex-nav-next {
  float: right;
}

.woocommerce .woocommerce-product-gallery.woocommerce-product-gallery--with-images ul.flex-direction-nav a {
  border-radius: 0px;
  text-indent: -9999em;
  background: #fff;
  left: 0;
}

.woocommerce .woocommerce-product-gallery.woocommerce-product-gallery--with-images ul.flex-direction-nav .flex-prev {
  left: 0;
}

.woocommerce .woocommerce-product-gallery__wrapper ul.flex-direction-nav .flex-next {
  right: 0;
  left: auto;
}


@media only screen and (min-width: 768px) {
  .woocommerce .woocommerce-product-gallery.woocommerce-product-gallery--with-images ul.flex-direction-nav {
    padding-left: 115px;
  }
}