<h1>block box</h1>
<div class="wrap">
  <div class="block">block</div>
  <div class="block">block</div>
  <div class="block">block</div>
</div>
<h1>inline box</h1>
<div class="wrap">
  <span class="inline">inline</span>
  <span class="inline">inline</span>
  <span class="inline">inline</span>
</div>
.wrap{
  background-color: #eee;
  color:#fff;
}
.block{
  background-color:red;
}
.inline{
  background-color:blue;
}

External CSS

This Pen doesn't use any external CSS resources.

External JavaScript

This Pen doesn't use any external JavaScript resources.