/* Source: http://www.w3.org/Style/CSS/Test/CSS3/Selectors/current/html/tests/css3-modsel-179.html */

  p { color: green; }
  span:first-line { background: red; color: yellow; font-size: 4em; }
  span::first-line { background: red; color: yellow; font-size: 4em; }