title: Fixed height Bootstrap card with vertically-scrollable card-text
body: <p>How can I achieve a <strong>fixed height</strong> bootstrap 4 card that has a vertically-scrollable <strong>card-text</strong> portion?</p>
  
  <pre><code>&lt;div class="card" style="height:300px"&gt;        &lt;-- non scrollable
      &lt;div class="card-body"&gt;                    &lt;-- non scrollable
          &lt;h5 class="card-title"&gt;Card title&lt;/h5&gt; &lt;-- non scrollable
          &lt;p class="card-text"&gt;This portion and only this portion will have a very long text so much so that the vertical scroll bar may appear when required.&lt;/p&gt;
      &lt;/div&gt;
  &lt;/div&gt;
  </code></pre>