CSS3 Selectors

The following pictures are straight up lifted from wikipedia. Here is a random link, and another link. However, you might notice that only the wikipedia link is underlined. How so?

Lorem ipsum dolor sit amet, consectetur adipiscing elit. Ut quis risus ut nunc bibendum volutpat. Curabitur ultrices condimentum elementum. In id orci dolor. Aliquam erat volutpat. Aenean eget libero justo. Class aptent taciti sociosqu ad litora torquent per conubia nostra, per inceptos himenaeos. Nullam ipsum orci, lobortis suscipit sodales tempus, malesuada in justo. Nam sagittis placerat orci. Nullam sed magna ac massa cursus luctus. Donec ut erat libero, eu bibendum nisl. Pellentesque vel eros a libero aliquet lacinia eget eget diam

The teenage mutant ninja turtlesThe teenage mutant ninja turtles comicThe teenage mutant ninja turtles comic - Michelangelo A TV still