The reason why the text is being typed vertically in Microsoft Word could boil down to the fact that the text direction was changed prior. If it is a table, then please select the text from within ...

The article How to control a Word table’s horizontal alignment shows you how to manually align tables between the left and right margins. It’s a quick task when working with only a few tables.

How to use a table to align header content in Word The problem at hand — text at the left margin that wraps at the right margin displacing right-aligned text on the same line — is rare.