How can I remove borders and space in the Expanse theme?

[Anna0423]

Guys, SOS. 
Expanse theme has these awful default borders. Looks terrible. How do I remove them? I want to remove them completely. 

Tried to change color to white in lines and borders in theme settings to make them invisible, but I need the lines it in other places. Must remove from product images

[ThePrimeWeb]

Hey @Anna0423,

Could you share the link to your store? Thanks!