// Coluna do grid
///
/// @param {number} @columns
/// @param {number} @push
/// @param {string} @fold [left]
///
.x-column(@columns:@columns, @push:@push, @fold:left) {
  display: inline;
  float: @fold;
  width: ~`xGridsystemWidth(@{columns})`;
  padding-left: @padding-width;
  padding-right: @padding-width;

  @if @fold == left {
    margin-left:~`xGridsystemWidth(@{push})`;
  }
  @if @fold == right {
    margin-right:~`xGridsystemWidth(@{push})`;
  }
}