Mixins

Nouvelles mixins pour le responsive

@include media-breakpoint-up(xs|sm|md|lg|xl) { ... }
@include media-breakpoint-down(xs|sm|md|lg|xl) { ... }
@include media-breakpoint-only(xs|sm|md|lg|xl) { ... }
@include media-breakpoint-between(md, xl) { ... }

// Example usage:
@include media-breakpoint-up(sm) {
  .some-class {
    display: block;
  }
}