  -webkit-column-gap: $colSpacing;
  -moz-column-count: $colCount;
  -moz-column-gap: $colSpacing;
  column-count: $colCount;
  column-gap: $colSpacing;
}

@mixin size($height, $width) {
  height: $height;
  width: $width;
}

@mixin square($size) {
  @include size($size, $size);
}

@mixin border-radius($radius) {
  -webkit-border-radius: $radius;
  -moz-border-radius: $radius;
  border-radius: $radius;
}

@mixin border-top-left-radius($radius) {
  -webkit-border-top-left-radius: $radius;
  -moz-border-radiu