[thelist] DIV IDs

[Daniel Fascia]

Im confused...

Do IDs in DIVs absolutely have to be unique throughout a page?

I have a page with many (4) #box objects which all use the same formatting
structure but differ in colour. I've used the ID to mark up the basic form of
the boxes and the class to vary the colour of each on the page.

Am I using IDs and classes incorrectly here??

could someone kindly explain...

thanks

Dan