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. Read the Official Bootstrap Documentation for a full list of instructions and other options.
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.
In addition to our border-radius utilities, you can use .img-thumbnail to give an image a rounded 1px border appearance.
Align images with the helper float classes or text alignment classes.
Make image as background to your content using the helper or utilities classes.
Royalty free means you just need to pay for rights to use the item once per end product. You don't need to pay additional or ongoing fees for each person who sees or uses it.