How to make HikaShop to display product variants on the right side

Hi,

The HikaShop variant selector dropdowns are already displayed on the right side of the product page. So I'm not sure what you're saying ? Are you talking about the variants listing which displays at the bottom when you change the characteristic selection method to "list" in the HikaShop configuration ?
If you want to move it, it's still possible but it's a bit complex. It requires a developer to customize the file product / show_default.php (or show_tabular if you're using the tabular layout) via the menu Display>Views.

Hi,

As you have a fairly simple layout, a bit of CSS code should be enough.
Try adding such CSS on your website and it should do what you want:

@media (min-width: 992px) {
#hikashop_product_characteristics {
    width: 50%;
    position: relative;
    top: -800px;
    float: right;
}
}