RipeSite web pages use and comply with W3C recommendations and standards.
The RipeSite Content Editor [Administration] interacts with Internet Explorer to create the interface and its functionality. In short, the user must login with Internet Explorer [Version 5+] to enable Content Editor window and icon functionality.
The one exception is adding and editing Snippets. Snippers are designed to use full HTML requiring a non-html browser such as Firefox.
More information: