// Box Sizing // ==========
// Box Sizing // ———- // Check for an existing support mixin, or provide a simple fallback. // - $model: <box-sizing> @mixin susy-box-sizing(
$model: content-box
) {
@if $model { @if susy-support(box-sizing, (mixin: box-sizing), $warn: false) { @include box-sizing($model); } @else { $prefix: (moz, webkit, official); @include susy-prefix(box-sizing, $model, $prefix); } }
}