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Code Issues Releases Wiki Activity

Focus ring helper and utilities (#33125)

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* Add global variables for box-shadow focus rings

* Update instances of -btn-focus-box-shadow to use -ring-box-shadow, unless it's for buttons or inputs

* fix variable name

* Add CSS variables for global focus styling, document it

* Move to CSS vars section

* Update scss/_nav.scss

Co-authored-by: Gaël Poupard <ffoodd@users.noreply.github.com>

* Helper and utils

* Fix bundlewatch

* Change 'Focus ring' in sidebar so that the page can be visible

* Minor typo fix

* fix merge

* Revamp some more, improve docs

Co-authored-by: Gaël Poupard <ffoodd@users.noreply.github.com>
Co-authored-by: Julien Déramond <juderamond@gmail.com>
Co-authored-by: Patrick H. Lauke <redux@splintered.co.uk>
This commit is contained in:
Mark Otto
2022-12-29 14:19:22 -08:00
committed by GitHub
parent 1a043b55bc
commit 9e17b2b34c
11 changed files with 130 additions and 11 deletions
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14
site/content/docs/5.3/customize/css-variables.md
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@@ -74,6 +74,20 @@ a {
}
```
## Focus variables
{{< added-in "5.3.0" >}}
Bootstrap provides custom `:focus` styles using a combination of Sass and CSS variables that can be optionally added to specific components and elements. We do not yet globally override all `:focus` styles.
In our Sass, we set default values that can be customized before compiling.
{{< scss-docs name="focus-ring-variables" file="scss/_variables.scss" >}}
Those variables are then reassigned to `:root` level CSS variables that can be customized in real-time, including with options for `x` and `y` offsets (which default to their fallback value of `0`).
{{< scss-docs name="root-focus-variables" file="scss/_root.scss" >}}
## Grid breakpoints
While we include our grid breakpoints as CSS variables (except for `xs`), be aware that **CSS variables do not work in media queries**. This is by design in the CSS spec for variables, but may change in coming years with support for `env()` variables. Check out [this Stack Overflow answer](https://stackoverflow.com/a/47212942) for some helpful links. In the meantime, you can use these variables in other CSS situations, as well as in your JavaScript.