zandyring on "Featured Content Slider doesn't work"

Now that I can help with!

Add this to your Custom CSS page:
https://ianmadsen.wordpress.com/wp-admin/themes.php?page=editcss

.main-navigation li {
font-size: 140%;
}

I played around a little, and 140% is about as large as you can go without the menu starting to wrap around (contact appearing on the bottom), but you can decrease it if you like.

I hope that helps!