// ===================================================
// Placeholder Class
// ===================================================

/// Vertical Center Elements
///
/// @param {bool} $extend [true] - Set it on false the mixin will used as regular mixin
///
/// @group core - placeholder
///
/// @example scss - scss
///   .box-1 {
///     @include vertical-center();
///   }
///   .box-2 {
///     @include vertical-center();
///   }
///   .box-3 {
///     @include break(4) {
///       @include vertical-center(false);
///     }
///   }
///
/// @example css - css
///   .box-1, .box-2 {
///     display: table-cell;
///     vertical-align: middle; }
///
///   @media screen and (min-width: 768px) {
///     .box-3 {
///       display: table-cell;
///       vertical-align: middle; } }
@mixin vertical-center($extend: true) {
  @if $extend {
    @extend %vertical-center;

  } @else {
    display: table-cell;
    vertical-align: middle;
  }
}

// Placeholder Class
%vertical-center {
  @include vertical-center(false);
}