Menu items can be sized in one of two ways:
Naturally – meaning their width is determined by the width of their contents.
Grid Columns – meaning their width is set as a percentage of their container.
The Grid is just a way of subdividing a container (generally the submenu) into columns. UberMenu has the ability to divide each container from 1 to 12 columns.
For a visual walkthrough of the UberMenu 3 Grid System, please view the: