Impulse Theme Change font and size text for H2 title in product description

Technical Q&A
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Topic summary

A user needed to modify the font family and size of H2 headings within product descriptions on their Shopify store using the Impulse theme.

Initial Problem:

  • Could not locate which file and field to edit in the theme’s CODE EDIT mode
  • Wanted to change both font type and size for H2 titles specifically in product descriptions

Solution Implemented:

  • User added custom CSS code targeting .product-block h2 with:
    • Font size: 12px
    • Font family: ‘circular’
    • Font weight: normal

Potential Issue Identified:
Another participant warned that this CSS approach may affect all H2 subheadings across the entire website, not just product descriptions, suggesting the solution might be too broad in scope.

Summarized with AI on November 12. AI used: claude-sonnet-4-5-20250929.
1

Hello.

I need some help to change the font and the texte size for the H2 title in the product description.

MHIMDI_0-1706781683882.png
MHIMDI_0-1706781683882.png623×326 9.83 KB

I can’t find which file and field need to be modified in the EDIT CODE mode :

Thank you

2

Hello There,

Please share your store URL and password.
So that I will check and let you know the exact solution here.

3

Hello.

I just added this CSS code to the CSS section and it’s working :

“”.product-block .rte h2

{ font-size: 12px;

font-family: ‘circular’;

font-weight: normal;

}“”

4

great, but its look like it will effect on complete website, font-size 12 for sub heading