The Microsoft 365 productivity suite supports several types of font presets, so your Office documents display with your preferred look and experience, without having to manually configure styles every time you create a new file.
How to Change the Default Font Size, Style, and Color in Microsoft Outlook [Tutorial]
To customize the default styles in a Word document, create a new template or customize your current default template.
Go to the Home tab and right-click a style in the Styles group.
Select Change from the pop-up menu.