/* `box-sizing`
   ========================================================================== */

@if $u-classes-box-sizing == true {

  $box-sizing-values:
    border-box
    content-box;

  @each $box-sizing-value in $box-sizing-values {
  
    .u-box-sizing--#{$box-sizing-value} {
      box-sizing: $box-sizing-value !important;
    }
  
  }

}