<button type="button" class="btn btn-primary btn-block">Primary</button>
<button type="button" class="btn btn-secondary btn-block">Secondary</button>
<button type="button" class="btn btn-success btn-block">Success</button>
<button type="button" class="btn btn-info btn-block">Info</button>
<button type="button" class="btn btn-warning btn-block">Warning</button>
<button type="button" class="btn btn-danger btn-block">Danger</button>
<button type="button" class="btn btn-dark btn-block">Dark</button>
<button type="button" class="btn btn-light btn-block">Light</button>
Result: