Button: Size Variation Width

<p class="btn primary narrow"><a href="#">narrow</a></p>
<p class="btn primary short"><a href="#">short</a></p>
<p class="btn primary"><a href="#">Default button</a></p>
<p class="btn primary long"><a href="#">long</a></p>
<p class="btn primary wide"><a href="#">wide</a></p>

<p class="btn primary free"><a href="#">free</a></p>