If I understand correctly, then you are trying to equalize the heights of the product boxes on https://shop.salonellendekoning.com/, correct? If so, there are two things you’ll need to change. . .
1. The selector you want is .type-product
, or .product
– either one should work. If you’re trying to target each product box, then a quick inspection of the source reveals the markup of each product box looks something like:
<li class="post-357 product type-product ...">
So your selector can be any of the classes that are shared across all products, the simplest of which I’ve listed above.
2. Equalizing the heights of these containers won’t actually change the appearance of anything, because there’s no background color to the product boxes. What you’d need to do is absolutely position the button within each box to be bottom aligned, which will require some custom CSS outside the scope of this plugin. That’d give you the effect you’re looking for I think.