I am looking to remove these faint lines in a page (one horizontal and one vertical).
The theme the company uses is Responsive
Any help is greatly appreciated!
To remove those two lines you would need to add these 2 CSS:
For that section use it’s custom-css setting to add that CSS without the tags.
That way you don’t have to directly edit theme files for minor changes.
https://help.shopify.com/en/manual/online-store/themes/theme-structure/extend/add-css