That worked perfectly! Thank you so much 
Topic summary
Goal: reduce the product description text size on product pages in a Shopify store.
Clarification: The target is the text written in the product description area (confirmed with a screenshot). Images were provided to illustrate the exact section and show before/after results.
Proposed fix: Edit the theme’s base.css and adjust CSS for the description’s heading. Key rule: target the product description heading selector and set a smaller font size with !important (e.g., 1.7rem). An additional suggestion included reducing paragraph text inside the product accordion to 16px if needed.
Outcome: Applying the heading size change in base.css successfully made the description text smaller. The original poster confirmed the fix worked.
Status: Resolved. No further changes requested. A late, unrelated question about starting a Shopify business appeared and was not addressed within this thread.
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