v4 - Make .card class display: block
Created by: Skwai
Cards using an anchor element are rendering as inline as the display
property is inherited, eg.
<a class="card card-block" href="#">
<h4 class="card-text">The parent is inline</h4>
<p class="card-text">This is some text</p>
</a>
Adding display: block;
to .card
class would fix this.