Resize Menu Background

I used the following CSS to add a background block to my main menu…

nav#mainnav ul li {
    background: #517629;

I’d like to increase the height of that block.

Hello ITGRadio,

I will be glad to help you, but can you please provide a link to your website to let me inspect it?

Kind Regards, Roman.

I’m building the site offline.
Thanks anyway.

You are welcome ITGRadio,

Please feel free to ask any other questions that you might have.

Kind Regards, Roman.