bootstrap brn code example Example 1: bootstarp btn colors Blue Grey Green Red Yellow Ligth blue White Black White with blue text Example 2: bootstrap Button tags The .btn classes are designed to be used with the element. However, you can also use these classes on or elements (though some browsers may apply a slightly different rendering). When using button classes on elements that are used to trigger in-page functionality (like collapsing content), rather than linking to new pages or sections within the current page, these links should be given a role="button" to appropriately convey their purpose to assistive technologies such as screen readers. Link Button