Navbar font uppercase

[hoangzu]

Hello,

Happy Holidays to all.
Attached is picture are there any one know how to edit this font to all uppercase please.
Thank you very much

[napy8gen]

paste below css into style manager> style name> edit templates> css template> css_additional.css

#channel-tabbar .channel-tabbar-list li a {
text-transform: uppercase;
}