If you’re familiar with the desktop version of Word, you know you can use mirror margins to set up facing pages for double-sided documents, such as books or magazines. Word Online preserves mirror margins already in your document, but it doesn’t yet provide a way to add them.
If you have the Word desktop application, click Open in Word to open the document and create the mirror margins.
When you’re done and you've saved the document, you can edit the document in Word Online, and it will preserve the mirrored margins.
Tip: Word Online works seamlessly with Word and other Office desktop programs, and we update it based on input like yours. For the latest feature announcements, visit the Office Online blog.