Thanks for your reply Rahul, however I don’t think you understood my question.
The problem I have is on mobile screens, the entire page can scroll left and right (overflow-x) slightly.
I want to find the container/parent where the overflow is the problem and fix that width.
I tried to add
.grid__item { overflow-x: hidden; } in theme.liquid but that stops the product information being sticky on desktop as i scroll and I very much need that to work.