Change Fonts in a Child Theme
Before changing fonts in your theme we recommend that you first create a child theme. Once you have done this you can change your themes fonts via CSS.
For example, let’s say you want to change the font used for post/page titles. The post/page titles have class names of entry-title and page-title. Simply add the following styles to the style.css file in your child theme.
Your post and page titles will now have the updated font.