How to Create custom Page Margins in Microsoft Word

Step 1: Click “Layout” This will be in the top toolbar, between Design and References.



Step 2: Click “Margins” You can find this in the upper-left corner of the Layout tab. This looks like a rectangle with blue lining the margins.


Step 3: Click “Custom Margins…” This will be at the bottom of the drop-down menu.


Step 4: Set your new margins. On the Desktop application,
You’ll be able to edit the margin sizes for: Top, Left, Bottom, Right, Gutter, and Gutter Positions.
On the web version, you’ll only be able to edit the margin sizes for: Top, Left, Bottom, and Right.
You’ll see a preview of the document layout at the bottom of the window.
Make sure Apply to is set to Whole document, unless you only want to change the margins from this point forward.


Step 5: Set new default margins (optional). If you want to use this margin for all new documents in Microsoft Word,
click Set as default in the bottom-left corner. Click Yes to confirm. When you create a new document, the margins will reflect the change.


Step 6: Click OK when finished. The changes will be applied immediately.

Credit : https://www.wikihow.com/Change-Margins-in-Word