Improvements #9207: Follow up on Bootstrap 5 theme
Allow for customization of Bootstrap 5 theme
wt.css for Wt-specific CSS as just a raw CSS file.
Bootstrap is a very customizable theme, and it's not unusual to do so, though possible to do this with
WBootstrap5Theme, it could be nicer (and more maintainable).
We should probably write
wt.css as SCSS and use variables defined by Bootstrap. We should then document how the theme can be customized and a custom theme can be built.