title: Modify b-card title using CSS bootstrap-vue
body: <p>So I have the following code:</p>
  <pre><code>&lt;b-card
    class=&quot;getting-started border-0&quot;
    overlay
    img-src=&quot;https://images.unsplash.com/photo-1554386690-cc2d52c7f3d6?ixid=MnwxMjA3fDB8MHxwaG90by1wYWdlfHx8fGVufDB8fHx8&amp;ixlib=rb-1.2.1&amp;auto=format&amp;fit=crop&amp;w=1395&amp;q=80&quot;
    img-alt=&quot;Card Image&quot;
    text-variant=&quot;white&quot;
    title=&quot;Getting Started&quot;
    sub-title=&quot;Where to begin?&quot;
  &gt;
      &lt;b-card-text&gt;
            Some quick example text to build on the card and make up the bulk of the card's content.
      &lt;/b-card-text&gt;
  &lt;/b-card&gt;
  </code></pre>
  <p>I would like to sytle the title inside b-card utilizing css. I haven't been able to find any  way to access this element.</p>