How can I increase the font size of Text and description for the category section in help center?

Hey there! In order to accomplish this, you'll need to use custom code*. Within Guide Admin, navigate to Customize Design > Customize > Edit code and click style.css. Search for the .blocks-item-title selector, and then change the font size property from 16px to your desired value. Then click Publish. Hope this helps!

*We do not provide support for custom code, so any issues caused by the implementation of custom code will need to be resolved on your end. If you are not comfortable making these changes yourself, we would encourage you to work with an experienced developer.