links with color white

Hello,

Some links on my website are white, sometimes the link, sometimes the link on hover. I tried to check with firebug, but it was not possible to see what css file is doing this. Can you help me with that?
On the following page you can see the last field of the form has a link where you can see its white. And on the same page you can go to the footer and see that the link on hover is also white.
https://horadourada.com.br/cadastre-se/

Kind regards,
Bruno

Hello,

I can't see your website (500 Internal Server Error)