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CSS Validation

The CSS on my site now validates 100%. It did before but it was always throwing warnings:

You have no background-color with your color

Reason? From the CSS Validator FAQ:

If you don't specify color and background-color at the same level of specifity, your style sheet might clash with user style sheets. To avoid this, specify always both of them, see Section 9.1 "Color Contrast" in the W3C Note "CSS Techniques for Web Content Accessibility Guidelines 1.0" or the article CSS Color Issues by the CSS Pointers Group for a discussion.

FWIW, I currently use background instead of background-color. As I understand it, it's six of one, half dozen of the other.

P.S. Would it be mean of me to point out that they've misspelled "specificity" as "specifity" (the #link gets it right, though)?

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