Print URL after links with CSS

CSS rule for making the URL of links visible when printing

from Print URL After Links | CSS-Tricks - CSS-Tricks by Chris Coyier

@media print {
  a::after{
    content: " (" attr(href) ") ";
  }
}

An older (2009!) screencast by Chris: #52: Building a Print Stylesheet | CSS-Tricks - CSS-Tricks