swa66 - 7:52 am on Jul 30, 2013 (gmt 0)
I'd not add classes named for what they make things look like. It's simply not sustainable in the long term.
(change the look of things and you have to change every html page ... )
I'd use :first-child and :last-child CSS3 selectors instead. Browsers (as always, IE<9 is the only one left in use) that cannot understand those pseudo classes cannot do rounded corners anyway.