How to edit your Shopify theme
Mar 19, 2026
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This is a reference guide for common Shopify theme editor tasks related to Flair. You don't need to follow every section. Jump to the one you need.
Open the theme editor
- Go to Shopify Admin > Online Store > Themes.
- Find your theme and click Edit theme.
Enable Flair in your theme
Turn on Flair in your theme so it can display badges and banners.
- Open the theme editor and click the App embeds icon in the left sidebar.
- Find Flair and toggle it on as shown below.
- Click Save.
Add an app block to your theme
App blocks let you add Flair badges and banners to your theme without editing code.
- Open the theme editor and navigate to the page you want to edit (e.g. a product page).
- Click Add block.
- Select a Flair block (e.g. Flair badges or Flair banners).
- Drag it to where you want it to appear.
- Click Save.
Advanced theme customization
Duplicate your theme
We recommend duplicating your theme before making code changes. Make your changes in the copy, then publish it when you're done.
- Go to Shopify Admin > Online Store > Themes.
- Click ... next to your theme, then Duplicate.
Edit theme code
Some Flair setups require editing your theme's code directly.
- Go to Shopify Admin > Online Store > Themes.
- Click ... next to your theme, then Edit code.
Before making changes to your theme code, we recommend duplicating your theme as a backup.
Add custom CSS to your theme
Use custom CSS to adjust how Flair appears on your store.
- Open the theme editor and click Theme settings (gear icon).
- Find Custom CSS and expand it.
- Add your CSS and click Save.