add class="btn btn-primary btn-arrow-right-first"
add class="btn btn-primary btn-arrow-right"
add class="btn btn-primary btn-arrow-right-last"
<button type="button" class="btn btn-primary btn-arrow-right-first">First Button</button>
<button type="button" class="btn btn-primary btn-arrow-right">Middle Button</button>
<button type="button" class="btn btn-success btn-arrow-right-last">Last Button</button>