These utilities extend the basscss-base-buttons
styles.
To change the line-height and padding but leave the font-size the same,
use button size extensions.
<button type="button" class="button-big button-blue">Burgers</button>
<button type="button" class="button-blue">Fries</button>
<div class="mb1 md-hide"></div>
<button type="button" class="button-narrow button-blue">Onion Rings</button>
<button type="button" class="button-small button-blue">Shakes</button>