Change the color, style, or weight of a line - Microsoft Support

Change the look of a line by applying a Quick Style, or customizing the color, style, or weight individually.

How to Draw and Manipulate Arrows in Microsoft Word

How to disable line weights in a PDF

Change a theme and make it the default in Word or Excel - Microsoft Support

How to Insert a Dotted Line in Microsoft Word: 3 Easy Ways

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Change Format Picture Defaults in Word 2016 - Microsoft Community

Enhance your Images in Microsoft Word with Picture Styles

Dark Mode in Word - Microsoft Support

Change the look and feel of Microsoft 365 - Microsoft Support