Labels are of six types:

Standard (gray background)
Primary (solid primary color background)
Success (solid success color background)
Warning (solid warning color background)
Danger (solid danger color background)
Info (solid info color background)

Use them as you would normally use a button - anchor links, input, submit etc..

This is a label in a paragraph
with a line break to add another row.

Label Standard Label Primary Label Secondary Label Success Label Warning Label Danger Label Info

Water discovered on mars New

Breaking News LIVE

Example Code:

<!-- Outline (Standard) Buttons: -->
<a class="button" href="#">Anchor button standard</a>
<button>Button element standard</button>
<input type="submit" value="submit input standard">
<input type="button" value="button input standard">

<!-- Primary Buttons: -->
<a class="button button-primary" href="#">Anchor button primary</a>
<button class="button-primary">Button element primary</button>
<input class="button-primary" type="submit" value="submit input primary">
<input class="button-primary" type="button" value="button input primary">
</div>

<!-- Success Buttons: -->
<a class="button button-success" href="#">Anchor button success</a>
<button class="button-success">Button element success</button>
<input class="button-success" type="submit" value="submit input success">
<input class="button-success" type="button" value="button input success">

<!-- Warning Buttons: -->
<a class="button button-warning" href="#">Anchor button warning</a>
<button class="button-warning">Button element warning</button>
<input class="button-warning" type="submit" value="submit input warning">
<input class="button-warning" type="button" value="button input warning">

<!-- Danger Buttons: -->
<a class="button button-danger" href="#">Anchor button danger</a>
<button class="button-danger">Button element danger</button>
<input class="button-danger" type="submit" value="submit input danger">
<input class="button-danger" type="button" value="button input danger">

<!-- info Buttons: -->
<a class="button button-info" href="#">Anchor button info</a>
<button class="button-info">Button element info</button>
<input class="button-info" type="submit" value="submit input info">
<input class="button-info" type="button" value="button input info">