Bootstrap figures
If you need to display an image or a piece of content with a caption, the <figure> element can be used. The <figure> element is part of the HTML5 spec and is not specific to Bootstrap 4. Bootstrap 4 does, however, provide some helper classes to style the <figure> element appropriately.
For example, the following HTML markup will create a <figure> element containing an image and a caption:
<div class="row">
<div class="col-md-12">
<figure class="figure">
<img src="@Url.Content("~/img/bulb.png")" class="figure-img
img-fluid img-rounded" alt="Light bulb">
<figcaption class="figure-caption">
This is a public domain image, available from
<code>http://publicdomainarchive.com</code>
</figcaption>
</figure>
</div...