Wraps the app in MUI's ThemeProvider plus a local ThemeContext, and
keeps the root <html> font-size in sync with userSettings.fontSize
(small = 14px, medium = 16px, large = 18px). Because every styled
component in the project uses rem, changing the root size rescales the
whole UI proportionally.
Wraps the app in MUI's
ThemeProviderplus a localThemeContext, and keeps the root<html>font-size in sync withuserSettings.fontSize(small = 14px, medium = 16px, large = 18px). Because every styled component in the project usesrem, changing the root size rescales the whole UI proportionally.