*

Matches any element. (Source: W3C)

HTML:

  1. <p>Lorem ipsum dolor sit amet, consectetur</p>
  2. <div>Lorem ipsum dolor sit amet, consectetur</div>
  3. <blockquote>Lorem ipsum dolor sit amet, consectetur</blockquote>

CSS:

  1. *{border:1px solid red}

Output:

Lorem ipsum dolor sit amet, consectetur

Lorem ipsum dolor sit amet, consectetur
Lorem ipsum dolor sit amet, consectetur

In the example, all elements should have a red solid border.