Click the large AutoFit icon, then click AutoFit Window.If you want to change the footer, click on the Switch button in the dialog box. You will see the Header and Footer dialog box, which looks very much like a toolbar. My name I would like this to be in the Normal.dotm.
It’s particularly useful if you ever change the page margins in your document - with a table set to ‘autofit to window’, changing the page margins means that the table resizes too and you don’t have to resize the columns manually.
This handy trick is useful for tables in your main document and any tables you might use for layout in your headers/footers. In this How to change one page to landscape in Word tutorial I show you how to change the orientation of one page to landscape on PC or MAC.