# Images

Documentation and examples for opting images into responsive behavior (so they never become larger than their parent elements) and add lightweight styles to them—all via classes.

## 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 element.

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

## 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="..." class="img-thumbnail" alt="...">

## 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.

                          <img src="..." class="rounded float-start" alt="...">
                          <img src="..." class="rounded float-end" alt="...">

                          <img src="..." class="rounded mx-auto d-block" alt="...">

                          <div class="text-center">
                            <img src="..." class="rounded" alt="...">
                          </div>

## 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>