// 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;

}