Changing Navigation Font Size in Debut Theme

[srmaze]

Hello - I'm trying to make the font size in my navigation menu bigger. When I change it in the Debut theme, it makes the headers on my page very large as well and I ONLY want to change the font size of my navigation text (Both the nav + the drop down items).

Here is my url - www.mazedara.com. can someone please assist? I have tried all the other listed solutions here and none seem to be working. 

Thank you!

[dmwwebartisan]

@srmaze 

Please add the following code at the bottom of your assets/theme.css / theme.scss.liquid file.

nav#AccessibleNav {
    font-size: 1.3em;
}

Hope this helps.

Thanks!