Change ALL Fonts to Same

Is there an easy way to change all font families to one?

I have the blog theme, an there is the font ‘PT Sans’ everywhere!

I want to change all fonts to ‘Source Sans Pro’

and tried it alreasy with this way: https://forum.tagdiv.com/topic/how-i-change-the-font-family-on-entire-site/

But there are still some PT Sans font styles as you can see on my website: http://www.histaminentzug.de

I please you to give me an easy simple way to change all the fonts at once

Thanks!

The way I did it wasn’t easy, but if you want to hurt your brain you can read about that in the pagespeed sticky 🙂