Automatically resize the control on a Web page to fit its contents
To prevent the PivotTable list from expanding beyond a specified size, type a value in pixels in the Maximum height box and/or the Maximum width box.
Note Scroll bars appear within the PivotTable list when more data is available than will fit in the area.
Change the width of a column in the row, column, detail, or data area
To increase or decrease the width, drag the boundary until the column is the width you want.
To make the column width fit the contents, double-click the column boundary.
Note You cannot adjust the height of the rows in a PivotTable list.