PR#28396 originally addressed an update via issue #23983 to make images more visible with a white background (implementation of gray "lightbox").
This PR implements those styles defined in PR#28396.
PR Close#33259
This PR adds the following links to web.dev/angular:
1. Link to the guides in the resource section under "Online Training"
2. Links to code-splitting & preloading in the lazy-loading guide
3. Link to the accessibility guide on web.dev/angular
PR Close#31804
Added word *relative* to the **Routes at the app level** section description. This was not specified before. The routes in the *lazy-loading-ngmodules/src/app/app-routing.module.ts* also had `loadChildren` values starting with `app/...`.
The code for `app-routing.module.ts` is already fixed in [this commit](67ad9468d3)
PR Close#26504
Stefanie Fluin
Amadou Sall
Judy Bogart
mgechev
George Kalpakas
Kapunahele Wong
Brandon
javatutorials2016
Siddharth Ajmera
William Marques