CSS for Responsive Upsell Window on Mobile Devices

To add CSS to the Product Upsell window to make it responsive on mobile devices, follow these steps:

  1. From "Shopify Admin", select Apps.
  2. Select Product Upsell.
  3. Select Upsell Settings.
  4. Scroll down to the "Custom Design" section.
  5. Copy and paste this code into the Custom HTML/CSS text area: Product Upsell Window Responsive Code.
  6. Select Save.

That's it!

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