// add randomish size classes

      $container.find('.element').each(function(){

        var $this = $(this),

            number = parseInt( $this.find('.number').text(), 10 );

        if ( number % 7 % 2 === 1 ) {

          $this.addClass('width2');

        }

        if ( number % 3 === 0 ) {

          $this.addClass('height2');

        }

      });