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// mixins
// --------------------------
// base rendering for an icon
@mixin fa-icon {
-webkit-font-smoothing: antialiased;
-moz-osx-font-smoothing: grayscale;
display: inline-block;
font-style: normal;
font-variant: normal;
font-weight: normal;
line-height: 1;
}
// sets relative font-sizing and alignment (in _sizing)
@mixin fa-size ($font-size) {
font-size: fa-divide($font-size, $fa-size-scale-base) * 1em; // converts step in sizing scale into an em-based value that's relative to the scale's base
line-height: fa-divide(1, $font-size) * 1em; // sets the line-height of the icon back to that of it's parent
vertical-align: (fa-divide(6, $font-size) - fa-divide(3, 8)) * 1em; // vertically centers the icon taking into account the surrounding text's descender
}
// only display content to screen readers
// see: https://www.a11yproject.com/posts/2013-01-11-how-to-hide-content/
// see: https://hugogiraudel.com/2016/10/13/css-hide-and-seek/
@mixin fa-sr-only() {
position: absolute;
width: 1px;
height: 1px;
padding: 0;
margin: -1px;
overflow: hidden;
clip: rect(0, 0, 0, 0);
white-space: nowrap;
border-width: 0;
}
// use in conjunction with .sr-only to only display content when it's focused
@mixin fa-sr-only-focusable() {
&:not(:focus) {
@include fa-sr-only();
}
}
// sets a specific icon family to use alongside style + icon mixins
// convenience mixins for declaring pseudo-elements by CSS variable,
// including all style-specific font properties, and both the ::before
// and ::after elements in the duotone case.
@mixin fa-icon-solid($fa-var) {
@extend %fa-icon;
@extend .fa-solid;
&::before {
content: unquote("\"#{ $fa-var }\"");
}
}
@mixin fa-icon-regular($fa-var) {
@extend %fa-icon;
@extend .fa-regular;
&::before {
content: unquote("\"#{ $fa-var }\"");
}
}
@mixin fa-icon-brands($fa-var) {
@extend %fa-icon;
@extend .fa-brands;
&::before {
content: unquote("\"#{ $fa-var }\"");
}
}