Mozilla features fully compliant standards support, including HTML 4.0, XML, CSS, and DOM, and is small, fast, and modular. Since its inception, Mozilla has been built as an open-source product, meaning the source code is publicly available. Mozilla's interface employs the standard browsing paradigm with Back, Forward, and Refresh buttons. It is skinnable, meaning you can download new looks for it. It features the ability to disable unrequested..