Firebug showing a style embedded within website – overrides main stylesheet

I am not really sure how to explain this issue – I’ve seen it before and fixed it once but cannot figure out how to do it this time!

When inspecting with firebug one of my styles says it is COMING FROM within my website.
So my website is deeprootstesting.com/live360

In firebug where it would normally say ‘style.css’ and give the line # it says
/live360 #2 line 52

It is applying a style that I accidentally put earlier – and have since changed in my style.css. It shows the style right below it properly, but crossed out to do the above override.
I thought it was due to placing a duplicate style.css somewhere in my site, but I cannot find one anywhere.

To view what I mean in firebug you can go to:
http://deeprootstesting.com/live360/

and use firebug to inspect my main content div, called
div id=live360-difference" class="home-page borderline"

You can then see the odd markup in the inspector.

This is also seen for on any other page by viewing inside
div class = "section container"

Sincere apologies if I have totally messed up trying to explain this – it’s a confusing one!

Any help would be so much appreciated you have no idea 🙂