Need Help with changing Link Color On Posts

Hi,

I need help trying to fix the link color on the links in my posts. I would like it to be red and then have the hover color be black with underline. Please advise how I can change this. Here, is the site:

https://www.giftideasforwomen.net/

Also, I seem to have this problem come and go where it was doing this the right way as I want above for some posts and not others. Any ideas what might be going on?

Thanking everyone in advance.

Best,
John