stylesguide-buttons.html

<button class="btn btn-default">Let's Talk</button>
<button class="btn btn-primary">Let's Talk</button>
<button class="btn btn-link">Let's Talk</button>
<button class="btn btn-info">Let's Talk</button>
<button class="btn btn-default btn-sm">Let's Talk</button>
<button class="btn btn-default btn-lg">Let's Talk</button>