JS Bin // source http://jsbin.com/xacawi

<!DOCTYPE html>
<html>
<head>
  <meta charset="utf-8">
  <title>JS Bin</title>
<style id="jsbin-css">
/*
* See https://davidwalsh.name/flexbox-dice
* for this flexbox tutorial. I just wrote some code
* to see for myself what was happening.
*/

.first-face{
  background-color:#fff;
  height:50px;
  width:50px;
  border:4px solid #fefefe;
  border-radius:8px;
  padding:10px;
  border-style:outset;
  
  /*
  * flexbox stuff
  */
  
  display:flex;
  justify-content:center;
  align-items:center;
  
}

.pip{
  background-color:#333;
  border:1px solid black;
  border-radius:50%;
  width:10px;
  height:10px;
  display:block;
}

body{
  background-color:#766;
}
</style>
</head>
<body>
<div class="first-face">
  <span class="pip"></span>
</div>

.pip{
  background-color:#333;
  border:1px solid black;
  border-radius:50%;
  width:10px;
  height:10px;
  display:block;
}

body{
  background-color:#766;
}</script>
</body>
</html>