Variants of grouped product are shown on two columns, but there is a row with two variants and a row with one variant only.
In order to have less rows it would be better to have all the rows with two variants
2) I would like to change font size in popup when i hover variant's images (actual size put me in a condition to see just a small part of item information). How could i do that?
When i add to cart a multiple product changing the quantity the asked quantity is carried only in the first item of all items grouped in the multiple products.
I think it would be better to carry the asked quantity into all items grouped into the multiple product (or at least do not carry any quantity into all the items grouped into the multiple product)