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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.
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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.

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

{{< callout warning >}}

SVG images and Internet Explorer

In Internet Explorer 10 and 11, SVG images with .img-fluid are disproportionately sized. To fix this, add width: 100%; or .w-100 where necessary. This fix improperly sizes other image formats, so Bootstrap doesn't apply it automatically. {{< /callout >}}

Image thumbnails

In addition to our [border-radius utilities]({{< docsref "/utilities/borders" >}}), 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]({{< docsref "/utilities/float" >}}) or [text alignment classes]({{< docsref "/utilities/text#text-alignment" >}}). block-level images can be centered using [the .mx-auto margin utility class]({{< docsref "/utilities/spacing#horizontal-centering" >}}).

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

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

{{< example >}}

{{< placeholder width="200" height="200" class="rounded" >}}
{{< /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>