100% resolution and no margin not working on image custom liquid section

Topic summary

Main issue: An image in a product page’s Custom Liquid section cannot be set to full width/100% resolution, and the top/bottom margins can’t be reduced. The user tried editing the theme’s base.css but saw no effect.

Context: “Custom Liquid” is a Shopify section that allows custom HTML/CSS/liquid code. “base.css” is the theme’s global stylesheet. A screenshot was attached to illustrate the spacing problem, but no specific code snippets were shared.

Latest update: A responder requested the store URL (and password, if applicable) to inspect the live theme and provide a solution.

Outcome/status: No fix yet. The thread is awaiting access details to investigate why CSS changes in base.css aren’t applying and how to force the image to 100% width and reduce vertical margins.

Summarized with AI on December 29. AI used: gpt-5.

I can’t make 100% resolution and minimize the top and bottom margin of my image using custom liquid section in my product page.

I tried adding code to Asset/base.css file but it doesn’t seem to work

Hi
Can you kindly share your store link (with the password, if any) with us? We will check it and suggest you a solution if possible.