<!DOCTYPE html>
<html>
<head>
  <meta charset="utf-8">
  <meta name="viewport" content="width=device-width">
  <title>JS Bin</title>
</head>
<body>
  <!-- Block-level -->
  <div>456</div>
  <div>5</div>
  <div>6</div>
  
  <!-- Block-level -->
  <span>1</span>
  <span>2</span>
  <span>3</span>
</body>
</html>
div, span {
  width: 80px;
  height: 80px;
  margin: 20px;
  background: skyblue;
}

div {
  background: pink;
  display: inline-block;
}

span {
  background: yellow;
  display: block;
}

External CSS

This Pen doesn't use any external CSS resources.

External JavaScript

This Pen doesn't use any external JavaScript resources.