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Diffstat (limited to 'pyblackbird_cc/static/scss/mixins/_visually-hidden.scss')
| -rw-r--r-- | pyblackbird_cc/static/scss/mixins/_visually-hidden.scss | 33 |
1 files changed, 33 insertions, 0 deletions
diff --git a/pyblackbird_cc/static/scss/mixins/_visually-hidden.scss b/pyblackbird_cc/static/scss/mixins/_visually-hidden.scss new file mode 100644 index 0000000..082aeec --- /dev/null +++ b/pyblackbird_cc/static/scss/mixins/_visually-hidden.scss @@ -0,0 +1,33 @@ +// stylelint-disable declaration-no-important + +// Hide content visually while keeping it accessible to assistive technologies +// +// See: https://www.a11yproject.com/posts/2013-01-11-how-to-hide-content/ +// See: https://kittygiraudel.com/2016/10/13/css-hide-and-seek/ + +@mixin visually-hidden() { + width: 1px !important; + height: 1px !important; + padding: 0 !important; + margin: -1px !important; // Fix for https://github.com/twbs/bootstrap/issues/25686 + overflow: hidden !important; + clip: rect(0, 0, 0, 0) !important; + white-space: nowrap !important; + border: 0 !important; + + // Fix for positioned table caption that could become anonymous cells + &:not(caption) { + position: absolute !important; + } +} + +// Use to only display content when it's focused, or one of its child elements is focused +// (i.e. when focus is within the element/container that the class was applied to) +// +// Useful for "Skip to main content" links; see https://www.w3.org/TR/2013/NOTE-WCAG20-TECHS-20130905/G1 + +@mixin visually-hidden-focusable() { + &:not(:focus):not(:focus-within) { + @include visually-hidden(); + } +} |