Linear gradient mixin
@mixin linear-gradient($direction, $color-stops...) {
// Direction has been omitted and happens to be a color-stop
@if is-direction($direction) == false {
$color-stops: $direction, $color-stops;
$direction: 180deg;
}
background: nth(nth($color-stops, 1), 1);
background: -webkit-linear-gradient($direction, $color-stops);
background: linear-gradient($direction, $color-stops);
}