Network Theme Navigation Bar Width

This is my custom css for Network’s top-navigaton-bar. I notice that when I look at it on an iPad, it does not extend all the over to the right and there is a slight amount of white space. How can I get the navigation bar to extend all the way over on any size screen?

#top-navigation-bar {

height:40px!important;

background: #3B5998!important;

border-top: 1px solid #6D84B4!important;

border-bottom: 1px solid #6D84B4!important;

}