<!-- Standard button -->
<button type = button class = btn btn-default>Default Button</button>
<!-- Provides extra visual weight and identifies the primary action in a set of buttons -->
<button type = button class = btn btn-primary>Primary Button</button>
<!-- Indicates a successful or positive action -->
<button type = button class = btn btn-success>Success Button</button>
<!-- Contextual button for informational alert messages -->
<button type = button class = btn btn-info>Info Button</button>
<!-- Indicates caution should be taken with this action -->
<button type = button class = btn btn-warning>Warning Button</button>
<!-- Indicates a dangerous or potentially negative action -->
<button type = button class = btn btn-danger>Danger Button</button>
<!-- Deemphasize a button by making it look like a link while maintaining button behavior -->
<button type = button class = btn btn-link>Link Button</button>
