How to change hyperlink colours in Upfront?

I'm having some trouble with my links in the spirit theme, but can't figure out how to change them in Upfront. They were black (and therefore visible) before, but for some reason they have changed to white (which on a white background can't be seen.

I've included a screenshot - you'll see a word missing after 'click' (where there's a 'here' but it's white), and I've highlighted another link which is also invisible to show the example. These links are at the bottom of this page: http://drgeraldlewis.com/disease-information/disease-alzheimers/

Any help would be much appreciated