Need to add some custom CSS to your WordPress theme but the dashboard for your theme doesn’t have a section for that? Well, the easiest way to do it is to grab the Custom CSS Manager WordPress Plugin. We highly recommend it. While we don’t always recommend simply overwriting tons and tons of CSS styles, this method can be less of a headache when it comes to upgrading your WordPress theme. You won’t have to keep track of any of the changes, because you won’t be changing your theme’s delivered stylesheet.
Simply jump over to the Plugin section in your WordPress dashboard and search for “Custom CSS Manager.” And then hit install.
Below is an example we are using on our blog to change the font style (overwrite) in our navigation menu.