Backport #21642
Browsers introduce a opaque background on iframes if the iframe
element's color-scheme does not match the document's color scheme which
in case of a dark theme results in a mismatch and the browser adds a
white background. Avoid this by specifying the same color scheme outside
and inside the iframe.
See https://fvsch.com/transparent-iframes for more info.
My initial attempt was to make the iframe document the same color-scheme
as the parent page (light or dark) but with that, there was a ugly
background flash on load in Chrome because Chrome apparently always
loads iframe in light scheme initially. Firefox still shows a background
flash on load but this is not possible to get rid of and it's certainly
a browser bug.
Before:
<img width="1147" alt="Screen Shot 2022-10-31 at 13 30 55"
src="https://user-images.githubusercontent.com/115237/199017132-9828aace-bdd0-4ede-8118-359e72bcf2fe.png">
After:
<img width="1152" alt="Screen Shot 2022-10-31 at 13 30 36"
src="https://user-images.githubusercontent.com/115237/199017137-989a9e67-3fe0-445f-a191-df5bf290dabf.png">
* Various Mermaid improvments
- Render into iframe for improved security
- Use built-in dark theme instead of color inversion
- Remove flexbox attributes, resulting in more consistent size rendering
- Update API usage and update to latest version
* restart ci
* misc tweaks
* remove unneccesary declaration
* make it work without allow-same-origin, add loading=lazy
* remove loading attribute, does not seem to work
* rename variable
* skip roundtrip to DOM for rendering
* don't guess chart height
* update comment to make it clear it's intentional
* tweak
* replace deprecated 'scrolling' property
* remove unused css file
Co-authored-by: Lunny Xiao <xiaolunwen@gmail.com>
* creates and implements generic markup less class
* How to give custom CSS to externally rendered html
* Clarifies sources of CSS styling of markup
* further clarification of sources of markup styling
* rename _markdown to _markup
* remove defunct import
* fix orphaned reference
* Update docs/content/doc/advanced/external-renderers.en-us.md
* more renames markdown -> markup
* do not suggest less customization
* add back tokens
* fix class whitespace, remove useless if-clause
* remove unused csv-data rules
* use named exports and rename functions
* sort imports
Co-authored-by: HarvsG <11440490+HarvsG@users.noreply.github.com>
Co-authored-by: techknowlogick <techknowlogick@gitea.io>
Co-authored-by: silverwind <me@silverwind.io>
2021-05-07 10:43:41 +02:00
Renamed from web_src/less/_markdown.less (Browse further)
