Elementor and storefront

Hi

I’m using the storefront theme and elementor. On my home page I have used the “product categories” widget from elementor.

Unfortunately it looks scruffy and non-uniform. I don’t seem to be able to change this? It does say that the style may be affected by your theme, but that doesn’t help me as I can’t seem to change it there either! Can anyone help me tidy it up please?

Also I would like to change the colour of the tabs on the product pages? I know this is a woo issue but I thought I’d see if anyone knew how whilst I’m here.

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