Divider
A divider marks a break between blocks. It is the <hr> element, themed to one thin line, with a small class when you want a word in the rule.
<p>Above the break.</p>
<hr>
<p>Below the break.</p>A rule
A plain <hr> draws a full-width line at the system gap. No class needed.
First block.
Second block.
<p>First block.</p>
<hr>
<p>Second block.</p>A labelled break
Add class="divider" to set a short label in the middle of the rule.
Section
<div class="divider">Section</div>