# Demo overview

* CodeSandbox bringing it all together
* Buttons that can use react-icons
* ThemeProvider which can provide css variables for old and new values
* IE11 css variables usage
* We did work to hook up size auditor to everything
* Already caught regressions
* Function component progress
*
* Compose and recompose
* ButtonBase
* ToggleBase
* LinkBase
* Still pending
* SliderBase
*
* RTL
* Child window support
* Bundle sizes