Use the button classes on the following elements:
< a>. If <a> elements are used to act as buttons (triggering in-page
functionality, rather than navigating to another document or section within the current page), then they should
also be given an appropriate role=\"button\".
<button>. Only <button> elements are supported within our navand navbar
components.
<input>.<button> element
whenever possible to ensure matching cross-browser rendering.