// Helpers // ==========================================================================
// Return ems from a pixel value // This assumes a base of 19px @function em($px, $base: 19) {
@return ($px / $base) + em;
}
// Hide, but not for screenreaders @mixin visually-hidden {
position: absolute; overflow: hidden; clip: rect(0 0 0 0); height: 1px; width: 1px; margin: -1px; padding: 0; border: 0;
}
.visually-hidden, .visuallyhidden {
@include visually-hidden;
}