App Cart overlaying with Theme Cart

Store Design
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Topic summary

A user is experiencing an issue where the MonsterCart app’s cart interface is overlaying and conflicting with their Shopify theme’s native cart, creating a visual problem on their store (amende.it).

Troubleshooting Steps:

  • The user temporarily deactivated the app to prevent the issue from appearing live
  • Community members initially couldn’t reproduce the problem, prompting the user to reactivate it for diagnosis

Proposed Solutions:

  1. Custom CSS Fix: A community member provided specific code to be added to the theme.liquid file (just above the </body> tag) to resolve the overlay conflict

  2. Alternative App: Another user suggested switching to Cart App Unicorn, which automatically handles theme cart conflicts without requiring custom code modifications

Root Cause: This is a common compatibility issue with MonsterCart, as it doesn’t automatically hide the theme’s default cart when activated, requiring manual intervention through CSS or using alternative cart apps designed to handle this conflict.

Summarized with AI on October 30. AI used: claude-sonnet-4-5-20250929.
5

Hi @AMENDE ,

I have written custom CSS for this solution. Please follow below steps and let me know your feedback.

Follow these Steps:

  1. Go to Online Store

  2. Edit Code

  3. Find theme.liquid file

  4. Add the following code just above tag

If you require further help to optimize your store, please don’t hesitate to reach out. If you find this information useful, a Like would be greatly appreciated. And if this solves the problem, please Mark it as Solution!

Best Regards,
Makka