Because:
1. `docs` feels like a "top level" page, similar to `features`, `resources`, `events` etc.
2. This enables the ServiceWorker to pre-fetch/cache the document (similar to what happens with all
other direct children of `content/docs/`), without the need for special-casing it in
`ngsw-manifest.json`.
- Add snackbar and pointer cursor for copy code button inside aio-code components
- Flex cenetered content in features page
- Removed duplicate global css class
- Add styles to links inside of sub-sections
- Remove focus outline on top nav bar links
Index: Changed h3s to h2s given hierarchy
Index: Aligned text and image blocks to be centered
Index: Announcement bar button darkened for appropriate contrast
Search Results: Changed to list items in unordered list to accommodate accessibility and updated styles accordingly
Fixed capitalization in sidenav menu items
Add min height property to sidenav-content for better viewing on short pages or high resolution screens
Add dividier between change log items as before to h2
Table adjustments to reduce off-screen items
Update home page banner text and icon change, and fix banner img and mobile alignment
Fix and add links in doc landing page and change card footer text to reflect correct name
Removed docs landing page to rebase with master
PR Close#16138
Now if you specifically provide an empty `@title` tag
for a contents file, the doc-gen will not complain and
the browser will just display a reasonable default.
Add visually hidden class and apply to h2 in search results
Changed h2 group headers to h3s
Add roles to main and content
Fix API material icon placement
Image alt additions where needed
Add lang attribute to html tag
Add aria-label on search input
contributor fix
contributor card styling updates
button styling and container size fix
remove button and add image border
selection filter for buttons
header only show when group selected and styles
initial flip card funcitonality and data change
selected buttons styling
complete flip func and card style
flip feature
contributor group changes
fixes
