Guys here is the problem i want my head text "PCT Research" on the center but the code

@media (min-width: 768px)
    .navbar-header {
         float: none;

is doing the problem its coming from online bootstrap , there it's float: right; i want to override it. How can i do it with using their online source or i have to do it manually by linking the bootstrap?

To see the full view of the nav here is the link: