Opt your images into responsive behavior (so they never become larger than their parent elements) and add lightweight styles to them—all via classes.
Images in Bootstrap are made responsive with
max-width: 100%; and
height: auto; are applied to the image so that it scales with the parent element.
SVG images and IE 9-10
In Internet Explorer 9-10, SVG images with
.img-fluid are disproportionately sized. To fix this, add
width: 100% \9; where necessary. This fix improperly sizes other image formats, so Bootstrap doesn’t apply it automatically.
Add classes to an
<img> element to easily style images in any project.