Hi Shadow33,
It sounds like you’re not using a theme that supports editing the header text without using CSS. So, you’ll need to edit the fonts in the CSS file.
If you’re going to do this, please keep in mind that you’ll most likely need to create a child theme. It depends on which theme you’re using, however. For example, if you’re using a starter theme, where the author has said it’s okay not to use a child theme, then you can edit the theme’s CSS file directly (the CSS file can be found under Appearance > Editor).
Check here for more on child themes.
Please use this method with caution. If you make an error in a theme’s files, it can break your site. Only use this method if you are comfortable editing CSS files and working with WordPress themes.
