For the target-text() function, an optional second argument specifies what content is retrieved.
It can be:

• content: string value of the element,
• before: string value of ::before element)
• after: string value of ::after element)
• first-letter: first letter of the element, as defined for the ::first-letter pseudo-element

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

Specs: https://www.w3.org/TR/css-content-3/#target-text

Note: Be carreful about nesting counters in before or after elements.

HTML: issue-96.html

Result: issue-96-wrong.pdf

The result we should get: issue-96-correct.pdf