Contact Information Block - Email Link Can't Be Seen

[asymptech]

My email link is the same color as the background and when you hover over the email link, it turns white.  How do I make the email link visible and change the font color to white and the hover color to another color like yellow or purple?
 

Here is the website: http://asymptech.com/darc/index.php

Thanks!

Edited October 9, 2016 by asymptech (see edit history)