Why does my PNG image show a faint grey box on Dawn theme?

Topic summary

A user encounters a faint grey border appearing around PNG images with transparent backgrounds when using Shopify’s Dawn theme. The issue is visible in an attached screenshot.

Proposed Solutions:

Two support representatives (GemPages and PageFly-Victor) suggest similar CSS fixes:

  • Navigate to Online Store → Themes → Actions → Edit Code
  • Add CSS code to remove the border from images
  • GemPages recommends adding code above the </head> tag in theme.liquid
  • PageFly-Victor suggests targeting specific CSS in the base.css file with border: none !important

Current Status:

Another user reports experiencing the identical problem and states that neither proposed solution (adding code to base.css or theme.liquid) has resolved the issue for them. The discussion remains open with no confirmed working solution.

Summarized with AI on November 12. AI used: claude-sonnet-4-5-20250929.

Hey @GemPages

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Thank you!