Gift link annotations

Using a simple CSS attribute selector , it's possible to add an annotation to denote links to gifted paywalled articles from the NY Times, Washington Post, or The Atlantic that are free to read (for a limited time). Here are three examples; the first link is paywalled and the second link is a gift link and is therefore marked with a "(🎁 link)" by the CSS selector. No Javascript necessary.

Note: You can remove the "?" from each selector to be more liberal in selecting parameters wherever they might appear in the query string.