add image in bootstrap code example
Example 1: responsive image in bootstrap
<img src="..." class="img-responsive">
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">
Example 3: How to insert an image in bootstrap 4
<img src="path to image" class="description" alt="Rounded Image">