content() function: content() = content([text | before | after | first-letter ])

The content() function is called in the property string-set:
string-set: <name> content([text | before | after | first-letter ]);

For now, only content(text) is implemented. We need the other values:

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before

The string value of the ::before pseudo-element, determined as if white-space: normal had been set.

HTML: content-before.html

The result we should get: content-before-correct.pdf

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after

The string value of the ::after pseudo-element, determined as if white-space: normal had been set.

HTML: content-after.html

The result we should get: content-after-correct.pdf

---

first-letter

The first letter of the element, as defined for the ::first-letter pseudo-element

HTML: content-first-letter.html

The result we should get: content-first-letter-correct.pdf