Change Font Size on Posts?

Hi there,

in Customizer > Typography, when you Add Typography you can select from a list of Target Elements. Select Custom.

In the Custom field you can add a CSS Class eg.

body.single-post

Now set the font styles you want and it will apply to just the single posts body text.

You can limit the scope to say just the text in your content with this selector:

body.single-post .entry-content