Image thumbnails
In addition to our border-radius utilities, you can use
.img-thumbnail to give an image a rounded 1px
border appearance.
Image Rounded & Circle
Use classes
.rounded and .rounded-circle avatar-md.
Responsive images
Images in Bootstrap are made responsive with .img-fluid. max-width: 100%; and height: auto; are applied to the image so that
it scales with the parent element.
Aligning images
Align images with the helper float classes or text alignment classes. block-level images can be centered using the .mx-auto margin utility class.
