How can I eliminate the visible seam from my main banner image?

Topic summary

A user is experiencing a visible horizontal seam in their main banner image despite setting opacity to 0% and using a transparent background.

Problem Details:

  • The seam appears as a horizontal line across the banner
  • Background opacity is already set to 0%
  • Image has no background layer
  • Screenshot provided showing the issue on their store

Proposed Solutions:
Two support teams (GemPages and PageFly) offered similar CSS-based fixes:

  1. Navigate to: Online Store > Themes > Actions > Edit Code
  2. Open the theme.liquid file
  3. Insert custom CSS code before the </head> tag (or </body> tag per PageFly)

Both responses included code snippets and visual guides, though the exact CSS markup appears corrupted in the thread text. The issue remains unresolved pending the user’s implementation of the suggested code.

Summarized with AI on November 21. AI used: claude-sonnet-4-5-20250929.

I could really use some help with removing the seam from my image banner, I have my opacity set to 0%, and the image in the banner has no background, so I am not sure why there is still a visible seam. I would really appriciate the help, so thank you in advance. In the image below you can notice the horizontal seam I would like to get rid of.

Website Link: https://printpals.store

Hello @PrintPals ,

It’s the GemPages Support Team and we are glad to assist you today!

I would like to give you the recommendation to support you so kindly follow the steps below:

  1. Go to Online Store > Theme > Edit code of your current theme

  1. Open your theme.liquid theme file

  2. Paste the below code before


Let us know how it works for you.

Best regards,
GemPages Support Team

Hi @PrintPals

You can try this code by following these steps:

Go to Online store => themes => actions => edit code and add this code on file theme.liquid before tag


Hope this answer helps.

Best regards,

Victor | PageFly