A first step to adding automatic dark mode color scheme switching. Adds a new SCSS file at `color_definitions.scss` that serves to output all SCSS color variables as CSS custom properties. And replaces all SCSS color variables with the new CSS custom properties throughout the stylesheets.
This is an alpha feature at this point, can only be enabled via console using the `default_dark_mode_color_scheme_id` site setting.
This reverts commit 20780a1eee.
* SECURITY: re-adds accidentally reverted commit:
03d26cd6: ensure embed_url contains valid http(s) uri
* when the merge commit e62a85cf was reverted, git chose the 2660c2e2 parent to land on
instead of the 03d26cd6 parent (which contains security fixes)
* Do not show "Uncategorized" category in topics list.
* Use "BreadcrumbList" only if topic is in a category.
* Add tags list as keywords to the first post.
* Add "dateModified" even if it is the same with "datePublished".
* Show "crawler-linkback-list" only if there are links to be shown.
* Cleaning up crawler styles, improving some schema.org markup
* Cleaning up crawler styles, improving some schema.org markup
* additional styling
* add space for pagination
* Fix header size to fit the viewport
Setting the header to border-box means that the padding is factored in when calculating its width. If this is not done, the header width would be 100% of the viewport width + any padding when set on it. That causes some parts of the header to be rendered off-screen and causes horizontal scrolling.
* prevent code in posts from causing horizontal overflow
We are currently not wrapping code in posts in the crawler view. This affects both unformatted code and inline code blocks. This commit forces such code to wrap in order to prevent horizontal overflow which the Google bot complains about since it causes some content to be rendered outside of the viewport for the mobile crawler.
Run `prettier --write "app/assets/stylesheets/**/*.scss" "plugins/**/*.scss"` after making sure you installed it with `yarn`
It's recommended to configure your editor to run prettier on file save.
