Image Rounded & Circle
Use classes
.rounded and .rounded-circle.
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Image thumbnails
In addition to our border-radius utilities, you can use
.img-thumbnail to give an image a
rounded 1px border appearance.
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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.
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