Unfortunately, no. Word for the web preserves columns that are already in your document, but it doesn’t yet provide a way to create them.
If you have the Word desktop application, use the Open in Desktop App command to open the document and create newsletter-style columns. When you’re done and you save the document, it will continue to be stored where you opened it in Word for the web. When you reopen it, the columns will be there.
If you don’t have Word, you can try or buy it in the latest version of Office now.
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