Select the text. Click the Layout tab under Table Tools.
To resize the table manually, drag a corner or middle resize handle.
To set a specific size for the table,
click the Table Size button, and then specify a height and width.
To keep the size proportional,
select the Lock Aspect Ratio check box.
To change margins, click the Cell Margins button,
and then click a cell size margin option:
Normal, None, Narrow, Wide, or Custom Margins.