| 1 | // stylelint-disable declaration-no-important
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| 2 |
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| 3 | // Hide content visually while keeping it accessible to assistive technologies
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| 4 | //
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| 5 | // See: https://www.a11yproject.com/posts/2013-01-11-how-to-hide-content/
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| 6 | // See: https://hugogiraudel.com/2016/10/13/css-hide-and-seek/
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| 7 |
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| 8 | @mixin visually-hidden() {
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| 9 | position: absolute ;
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| 10 | width: 1px ;
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| 11 | height: 1px ;
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| 12 | padding: 0 ;
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| 13 | margin: -1px ; // Fix for https://github.com/twbs/bootstrap/issues/25686
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| 14 | overflow: hidden ;
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| 15 | clip: rect(0, 0, 0, 0) ;
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| 16 | white-space: nowrap ;
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| 17 | border: 0 ;
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| 18 | }
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| 19 |
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| 20 | // Use to only display content when it's focused, or one of its child elements is focused
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| 21 | // (i.e. when focus is within the element/container that the class was applied to)
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| 22 | //
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| 23 | // Useful for "Skip to main content" links; see https://www.w3.org/TR/2013/NOTE-WCAG20-TECHS-20130905/G1
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| 24 |
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| 25 | @mixin visually-hidden-focusable() {
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| 26 | &:not(:focus):not(:focus-within) {
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| 27 | @include visually-hidden();
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| 28 | }
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| 29 | }
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