title: What is the Bootstrap card-block class?
body: <p>I don't see the class <code>card-block</code> mentioned in the reference documentation, but I have seen this class used in a few examples. This is the officially reference:</p>
  
  <p><a href="https://getbootstrap.com/docs/4.0/components/card/" rel="noreferrer">https://getbootstrap.com/docs/4.0/components/card/</a></p>
  
  <p>And this is an example where the class is used:</p>
  
  <p><a href="https://www.codeply.com/go/pVsGQZVVtG/bootstrap-4-no-gutters-(spacing)" rel="noreferrer">https://www.codeply.com/go/pVsGQZVVtG/bootstrap-4-no-gutters-(spacing)</a></p>
  
  <p>I've seen cards used but what is this <code>card-block</code> class?</p>
  
  <p><strong>Example:</strong></p>
  
  <pre><code>&lt;div class="row"&gt;
    &lt;div class="col-3"&gt;
      &lt;div class="card"&gt;
        &lt;div class="card-block"&gt;
          normal
        &lt;/div&gt;
      &lt;/div&gt;
    &lt;/div&gt;
    &lt;div class="col-4"&gt;
      &lt;div class="card"&gt;
        &lt;div class="card-block"&gt;
          normal
        &lt;/div&gt;
      &lt;/div&gt;
    &lt;/div&gt;
    &lt;div class="col"&gt;
      &lt;div class="card"&gt;
        &lt;div class="card-block"&gt;
          normal
        &lt;/div&gt;
      &lt;/div&gt;
    &lt;/div&gt;
  &lt;/div&gt;
  </code></pre>