6.1 #Utilities.text-center Text center

Center text within a block by applying text-center

Example

Centered text

<p class="text-center">Centered text</p>
Source: styles.css, line 260

6.2 #Utilities.clearfix Clearfix

Add the class clearfix to an element to force it to contain its floated contents

Example
floated
<div class="clearfix">
  <span class="float-left">floated</span>
</div>
Source: styles.css, line 289

6.3 #Utilities.float-left Float left

Float an element to the left with float-left

Source: styles.css, line 276