Hello,
Check this topic https://www.8theme.com/topic/responsive-headings/ https://www.w3schools.com/cssref/pr_font_font-size.asp https://www.w3schools.com/cssref/pr_font_weight.asp https://www.w3schools.com/cssref/pr_text_color.asp Do you use Elementor or WPBakery? You can enable the editor for product description in settings of these plugins.
Regards
