what does \ mean in a css hex color notation?

Question

I\'m curious what something like this means in CSS:

background-color: #080808 \\9;

I know the hex c

Answer 1

That's an old Internet Explorer hack

\9 hack WORKS for: IE8 IE8 Standards, IE8 IE7 Standards, IE8 Quirks mode, IE7 Quirks, IE7 Standards (all varieties of IE8), IE6

So, in short, if you want an IE CSS hack that works in all flavors of IE, use the backslash-nine hack.

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