Responsive images#

Images in Bootstrap are made responsive with .img-fluid. This applies max-width: 100%; and height: auto; to the image so that it scales with the parent width.

{ {< example >} } { { < placeholder width="100%" height="250" class="bd-placeholder-img-lg img-fluid" text="Responsive image" }} { {< /example >} }

Image thumbnails#

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

{ {< example >} } { { < placeholder width="200" height="200" class="img-thumbnail" title="A generic square placeholder image with a white border around it, making it resemble a photograph taken with an old instant camera" }} { {< /example >} }

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.

{ {< example >} } { { < placeholder width="200" height="200" class="rounded float-start" }} { { < placeholder width="200" height="200" class="rounded float-end" }} { {< /example >} }

{ {< example >} } { { < placeholder width="200" height="200" class="rounded mx-auto d-block" }} { {< /example >} }

{ {< example >} }

{ {< /example >} }

Picture#

If you are using the <picture> element to specify multiple <source> elements for a specific <img>, make sure to add the .img-* classes to the <img> and not to the <picture> tag.

<picture>
  <source srcset="..." type="image/svg+xml">
  <img src="..." class="img-fluid img-thumbnail" alt="...">
</picture>

CSS#

Sass variables#

Variables are available for image thumbnails.

{ { < scss-docs name="thumbnail-variables" file="scss/_variables.scss" }}