Html
<button class="sf-button">Default Button</button>
<button class="sf-button" disabled>Disabled Default Button</button>
<a class="sf-button">Default Button</a>
<a class="sf-button -disabled">Disabled Default Button</a>
<button class="sf-button">Default Button</button>
<button class="sf-button" disabled>Disabled Default Button</button>
<a class="sf-button">Default Button</a>
<a class="sf-button -disabled">Disabled Default Button</a>