How to avoid top navigation menu item wraps

To support mobile view, SharePoint 2013 wraps menu item automatically. That's not user friendly to PC users.  As the screenshot below show, 7 items are displayed in 13 rows!

 Most of solutions recommend to overwrite CSS for element "ul.dynamic", such as here and here. But that requires uploading a css file and then add the CSS reference in master page. Is there any other place uses "ul.dynamic"? If yes, then all of them get affected.

Below is a tip so we can avoid modifying master page.

Just a dummy menu item.