Custom type works in the editor, but not on the live site

We have used custom fonts for the site, but need to add CSS to have the same fonts in all blocks. It works on most things, but when I've tried to change the captions in a gallery-block, it only works in the editor and not on the live site.

I've added !important and looked around the forum for answers, but I can't find what's missing.

Does anyone have a fix? 

@tuanphan?

Image shows how it looks in editor. On live site, the text is white and in Times New Roman...

Can you share your website URL and the page this is on? Thanks!

https://www.griegfoundation.com/online-gallery

This helped straight away. Even managed to include the changes to color and linespacing below it. Thanks!

5 minutes ago, Kallegraphics said:

This helped straight away. Even managed to include the changes to color and linespacing below it. Thanks!

Amazing!