Hi,
This is not something linked to the modules or HikaShop.
This is done by your template.
So, the best is to check with your template provider what they recommend.
From what I can see on your website, CSS code might help you here.
For example, this CSS code:
.com_hikashop.view-category.layout-listing.task-listing.itemid-124 .grid-child.container-component {
grid-column: full-start / full-end !important;
}
But the best is to check with your template provider. They might have a better solution for you.