Only one h1 is allowed per document.
(Also took the opportunity to remove unnecessary blank lines from these
docs, and a bit of general tidying.)
Closes#16193
* fix(aio): allow code blocks to clear floated images
Previously the negative margin on the code headings were causing
floated images to overlay the start of a code block. Now all code block
successfully clear all floated elements.
* feat(aio): add a `.clear` class for clearing floating images
* fix(aio): tidy up image styles
The css rules for `img.right` and `img.left` allow authors easy
access to floating an image on the left or right, respectively.
The `.image-display` rule which was always found on a figure
has been simplified so that all figures have this styling. It is very
unlikely that a figure will be used outside the content area; and
at this time it seems like `figure` is as good an indicator that we
want this kind of styling as anything.
Now that images are all tagged with width and height values, we cannot
assume to modify these dimensions via CSS as it can cause the image to
lose its correct proportions. Until we find a better solition we must set
`height` to `auto` when the screen width is below 1300px to ensure that
these images maintain their proportions as they get shrunk to fit.
* docs(aio): general tidy up of image HTML in guides
Previously, the guides have a lot of inline image styling and unnecessary
use of the `image-display` css class.
Images over 700px are problematic for guide docs, so those have been given
specific widths and associated heights.
* docs(aio): use correct anchor for "back to the top" link
The `#toc` anchor does not work when the page is
wide enough that the TOC is floating to the side.
* build(aio): add `#top-of-page` to path variants for link checking
Since the `#top-of-page` is outside the rendered docs
the `checkAnchorLinks` processor doesn't find them
as valid targets for links.
Adding them as a `pathVariant` solves this problem
but will still catch links to docs that do not actually exist.
* fix(aio): ensure that headings clear floated images
* fix(aio): do not force live-example embedded image to 100% size
This made them look too big, generally. Leaving them with no size means
that they will look reasonable in large viewports and switch to 100% width
in narrow viewports.
Update to in-memory-web-api should handle id=0.
Make sure this works by having a hero with id=0 in ToH.
Coincidentally delete lingering dead app/ folders
Todo: fix ToH images (which have to do anyway)
The migrator was updated to automatically fix these links.
See fca5fb0280
and 3927b7a038
The result of this is that, going forward, we should ask
authors to include the path from the base href to the thing
being linked. E.g. guide/architecture#intro
Peter Bacon Darwin
Ward Bell
Georgios Kalpakas
Jesus Rodriguez