Html
<button class="sf-button -icon"><i class="sf-icon -size-xs sf-fa sf-fa-sliders sf-button__icon"></i></button>
<button class="sf-button -icon" disabled><i class="sf-icon -size-xs sf-fa sf-fa-sliders sf-button__icon"></i></button>
<button class="sf-button -action -icon"><i class="sf-icon -size-xs sf-fa sf-fa-sliders sf-button__icon"></i></button>
<button class="sf-button -action -icon" disabled><i class="sf-icon -size-xs sf-fa sf-fa-sliders sf-button__icon"></i></button>
<br>
<a class="sf-button -icon"><i class="sf-icon -size-xs sf-fa sf-fa-sliders sf-button__icon"></i></a>
<a class="sf-button -icon -disabled"><i class="sf-icon -size-xs sf-fa sf-fa-sliders sf-button__icon"></i></a>