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blender-cloud/static/assets/bootstrap/sass/mixins/_screen-reader.sass

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// Only display content to screen readers
//
// See: https://a11yproject.com/posts/how-to-hide-content/
// See: https://hugogiraudel.com/2016/10/13/css-hide-and-seek/
=sr-only
position: absolute
width: 1px
height: 1px
padding: 0
overflow: hidden
clip: rect(0, 0, 0, 0)
white-space: nowrap
border: 0
// Use in conjunction with .sr-only to only display content when it's focused.
//
// Useful for "Skip to main content" links; see https://www.w3.org/TR/2013/NOTE-WCAG20-TECHS-20130905/G1
//
// Credit: HTML5 Boilerplate
=sr-only-focusable
&:active,
&:focus
position: static
width: auto
height: auto
overflow: visible
clip: auto
white-space: normal