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> id vs class
minidiapolis
post Jan 28 2008, 11:07 AM
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Can someone help me understand the difference between ids and class? Ids can only be used once, right?
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Darin McGrew
post Jan 28 2008, 11:43 AM
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Yes, an id value can be used only once per document. A class value can be used multiple times per document. It's the difference between "George Washington" (an id) and "US Presidents" (a class).

Also, in determining CSS specificity, #id selectors have higher specificity than .class selectors.
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