Issues with links changing colour

Hey

Was wondering if anyone might be able to help me with an issue I have on my works website. I recently made some minor changes to our homepage, and in doing so it changed all of the linked text (for example – news stories that link to a separate page, events in the right hand panel that link to a separate events page). Now they appear in hyperlink blue and purple. I’m completely stumped as to why this has happened. I’m pretty useless with coding, but can do a little. Anyone got any thoughts?!

The website is at – http://www.wnht.org.uk

Thanks in advance,
Ian