Previously, each marketing page used a different limit for its content's
width (if it had a limit at all) and implemented the width limiting in a
different way. Besides resulting in an inconsistent UX, this also made
it difficult to apply site-wide layout changes.
This commit makes the limit for most marketing pages consistent and uses
the same CSS class to make it easier to apply site-wide changes in the
future. The chosen limit is slightly larger than that of docs pages
(62.5em/1000px vs 50em/800px), because marketing pages have a different
type of content and layout (i.e. images, multi-column layout, etc.).
Finally, this commit also removes obsolete wrapper elements, CSS classes
and CSS styles, that are no longer necessary after the changes.
Notably, the homepage (`/`) and the "Contributors" page (`/about`) have
remained unchanged, because the former has its own layout that is
different from other marketing pages and the latter would offer a worse
UX with a small content width limit (as the one used on other marketing
pages).
The content widths of the rest of the marketing pages change slightly as
a result of the changes in this commit, but not in a way that would have
a negative impact on UX. More specifically:
| Page (URL) | Size before | Size after |
|:--------------|------------:|-----------:|
| `/contribute` | 880px | 1000px |
| `/events` | unlimited | 1000px |
| `/features` | 996px | 1000px |
| `/presskit` | 800px | 1000px |
| `/resources` | 800px | 1000px |
PR Close#41051
This commit replaces some outdated URLs in "Contribute" links (on the
"Contribute" page):
- `github.com/angular/material2` --> `github.com/angular/components`
- `github.com/angular/angularfire2` --> `github.com/angular/angularfire`
It also replaces the deprecated `md-button` attribute with `mat-button`.
PR Close#40944
In the marketing pages we do not want to show heading anchors on hover.
Previously, this was achieved by using div rather than heading elements.
Now we can use semantically accurate headings while hiding the anchor.
Closes#17244Closes#17264
George Kalpakas
Alan
Stefanie Fluin
Peter Bacon Darwin
Jesus Rodriguez
