CSS : Should I use single colons (:) or double colons (::) for before, after, first-letter and first

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CSS : Should I use single colons (:) or double colons (::) for before, after, first-letter and first-line pseudo-elements?
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CSS : Should I use single colons (:) or double colons (::) for before, after, first-letter and first-line pseudo-elements?
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double or (::) pseudo-elements? colons : (:) CSS use after, colons and before, for first-letter Should single first-line I



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