Change category view on mobile phone

Hello!

I have a problem with my mobile webshop: I have three product categories, and these are listed on one line on the website. But in the mobile version, there is only room for two categories on one line, and then the third on the line under. Is it possible to get all three on the same line, or have all of them under each other? It just looks a little lopsided now, but I cannot find any way to change it in the costumizer.

The page I need help with: [log in to see the link]