<div class="button-size"><div class="buttonSquare darkpink"><i class="fa fa-bar-chart"></i><span>Bar</span></div></div>
<div class="button-size-normal"><div class="buttonRounded darkbluelightplus"><i class="fa fa-bar-chart"></i><span>Bar</span></div></div>
<div class="button-size-large"><div class="buttonSquare darkgreen"><i class="fa fa-bar-chart"></i><span>Bar</span></div></div>