<div class="example"></div>

<p>See <a href="http://www.sitepoint.com/12-little-known-css-facts/">article</a>.</p>

body {
  font-family: Arial, sans-serif;
  text-align: center;
}

.example {
  width: 100px;
  height: 100px;
  margin: 20px auto;
  background: aqua;
  border: solid thick red;
}