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webvirtcloud/dev/scss/bootstrap/mixins/_visually-hidden.scss
catborise d4f04cbf1e build(deps): Bootstrap and Bootswatch 5.3.8
Bootstrap SCSS, the JS bundle and the Bootswatch themes go from 5.3.3 to
5.3.8 (bug fixes only), and wvc-main.min.css is recompiled from zephyr.
Bootswatch now gives table text the body color, and Lux drops card and
modal header borders.

Tests compile every theme with the pinned libsass and check that the
shipped CSS is zephyr from these sources. The update and rollback steps
put back the two files a theme change rewrites, or git refuses to pull
over them.
2026-10-12 08:44:31 +03:00

38 lines
1.2 KiB
SCSS
Executable file

// 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;
}
// Fix to prevent overflowing children to become focusable
* {
overflow: hidden !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/WAI/WCAG22/Techniques/general/G1.html
@mixin visually-hidden-focusable() {
&:not(:focus):not(:focus-within) {
@include visually-hidden();
}
}