<!-- Responsive Image -->
<img src="https://unsplash.it/400/300" class="img-fluid" alt="Responsive image">
<hr>
<!-- Standard, Rounded, Thumbnail, Pill & Circle Images -->
<img src="https://unsplash.it/100/100" class="" alt="standard image">
<img src="https://unsplash.it/100/100" class="rounded" alt="rounded image">
<img src="https://unsplash.it/100/100" class="img-thumbnail" alt="thumbnail image">
<img src="https://unsplash.it/200/100" class="rounded-pill" alt="thumbnail image">
<img src="https://unsplash.it/100/100" class="rounded-circle" alt="thumbnail image">
<hr>
<!-- Centered, Using the Picture Element -->
<picture>
<source srcset="https://unsplash.it/200/200" type="image/svg+xml">
<img src="https://unsplash.it/200/200" class="mx-auto d-block" alt="Responsive image">
</picture>
