Hi,
In the CSS of your template (in the file template.css of the template), you have CSS specific to this area but that CSS is only valid for the default thumbnails, not the other variants thumbnails.
This CSS code :
.hikashop_product_page .hk-row-fluid #hikashop_product_left_part #hikashop_small_image_div a {
display: inline-block;
margin: 0 5px;
padding: 0 5px;
border: 1px solid rgba(0,0,0,0.8);
}
should be:
.hikashop_product_page .hk-row-fluid #hikashop_product_left_part .hikashop_small_image_div a {
display: inline-block;
margin: 0 5px;
padding: 0 5px;
border: 1px solid rgba(0,0,0,0.8);
}
and this CSS code:
.hikashop_product_page .hk-row-fluid #hikashop_product_left_part #hikashop_small_image_div a img.hikashop_child_image {
height: 100px;
}
should be:
.hikashop_product_page .hk-row-fluid #hikashop_product_left_part .hikashop_small_image_div a img.hikashop_child_image {
height: 100px;
}
I would recommend you to contact the support of your template provider to notify them of the problem so that they can provide the appropriate patch.