bootstrap images to use in background code example

Example 1: add background image in bootstrap 5

<div class="has-bg-img bg-purple bg-blend-screen">
  <h4>Background blend mode: Multiply</h4>
  <img class="bg-img" src="...">
</div>

Example 2: bootstrap Image thumbnails

In addition to our border-radius utilities, you can use 
.img-thumbnail to give an image a rounded 1px border appearance.

<img src="..." alt="..." class="img-thumbnail">