Remove "Questions, Unanswered, Ask a Question"?

Hi there, downloaded this theme and it's working great.

I just need to be able to remove the header detail like "ask a question" etc and have no idea which file it may be in?

Also the CSS is weird and doesn't align properly - is that a problem my end?
http://gf.peterbotting.co.uk/questions/

If someone could help that would be great!

Thanks very much,

Liam