Grid container used to arrange elements in a grid like layout Grid container will arrange its children in a grid like structure, the grid columns are specified using the [method set_columns] method and the number of rows will be equal to the number of children in the container divided by the number of columns, for example: if the container has 5 children, and 2 columns, there will be 3 rows in the container. Notice that grid layout will preserve the columns and rows for every size of the container. Returns the number of columns in this container Sets the numbers of columns in the container, then reorder its children to accommodate the new layout