Base Typography settings
Typography on an online store is really important, make sure to choose a font for your base elements and titles that fits your brand. Also, make sure to size everything as you want.
To access the Base typography Settings, click Customize (Themes section on Shopify) > Theme settings > Base Typography
This font, by default, is used for most of the text, including content (product name, product description), labels (SALE), navigation links, etc.
This font is, by default, used for titles and headings.
Font size will impact a lot of elements on your website. All elements in the theme have a default size.
Therefore, you can change adjust the 4 different sizes:
Small font size
This is the font size for information such as the brand name on a product card but can be used in other places in the theme.
Base font size
This is the font size for most of the site's content, including, but not limited to, product description, product name, navigation links.
Medium font size
This font size is by default used for headings and titles.
Big font size
This font size is by default not being used in the theme.
Content block size
Also, you can change the size of your content with the help of this setting. Changing the size of your content will always follow the Typography settings.
Heading and subheading