I can't change the font of the summary block headlines

Hi there, 

I haven't managed to change the font of the article headlines within the summery block. I would like to have them in the "Pragmatica" font. 

In Custom CSS I have already changed it from the old font to "Pragmatica" but there are no changes shown. Only when I change the weight I see a difference but not when changing the font. Any help? 🙂

I have attached a screenshot with the CSS, the summary grid how the title headlines appear (in a serif font, not Pragmatica) and a screenshot with the Pragmatica font which I would like to have in the summary grid too. 

To change headings in Summary blocks you change the font for paragraphs in site styles. 
This changes the title and the excerpt text. 

If you want to change just the title, and not the excerpt I use this code on my site.

.summary-title-link {
    font-family: proxima-nova, serif;
    font-size: 18px;
}