The ThemeProvider component is a wrapper around the styled-components’ ThemeProvider
Wrap the root of your application with the ThemeProvider
component,
which adds the Design System theme to context for use in styled-components
and sets typographic defaults (including, optionally, loading our webfont, Averta).
This should only be included once in your application.
<ThemeProvider webfonts>
<Heading>Hello</Heading>
</ThemeProvider>