Getting Menu Items to be in one line

Envato Customers Web and Code
1

Is there a way to get the items in my main navigation menu to fit in one line? I am currently using the RT-Theme 18 theme. Any help would be appreciated as I am quite new to WordPress.

https://www.mayriverdermatology.com/

2

Hello, can you clarify what do you mean?
This is what I am seeing on 1920X1080 resolution and all your Main Nav items are on one line.

Screenshot

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