@mixin hover-focus {
  @if $enable-hover-media-query {
    &:focus { @content }
    @include hover { @content }
  }
  @else {
    &:focus,
    &:hover {
      @content
    }
  }
}

@mixin plain-hover-focus {
  @if $enable-hover-media-query {
    &,
    &:focus {
      @content
    }
    @include hover { @content }
  }
  @else {
    &,
    &:focus,
    &:hover {
      @content
    }
  }
}

@mixin hover-focus-active {
  @if $enable-hover-media-query {
    &:focus,
    &:active {
      @content
    }
    @include hover { @content }
  }
  @else {
    &:focus,
    &:active,
    &:hover {
      @content
    }
  }
}

//reset box model mixin
@mixin box-sizing($box-model) {
  //prefixes removed in latest b4
  //-webkit-box-sizing: $box-model; // Safari <= 5
  //   -moz-box-sizing: $box-model; // Firefox <= 19
    box-sizing: $box-model;
}