부트스트랩 네비게이션 메뉴 가운데로 오게하는 방법좀 부탁드립니다.

<nav class="navbar navbar-inverse navbar-static-top">      <div class="container-fluid">        <!-- Brand and toggle get grouped for better mobile display -->        <div class="navbar-header">          <button type="button" class="navbar-toggle collapsed" data-toggle="collapse" data-target="#bs-example-navbar-collapse-1">            <span class="sr-only">Toggle navigation</span>            <span class="icon-bar"></span>            <span class="icon-bar"></span>            <span class="icon-bar"></span>          </button>          <a class="navbar-brand" href="#"><img src="images/logo.png" width="50" height="50" alt="logo"></a>        </div>            <!-- Collect the nav links, forms, and other content for toggling -->        <div class="collapse navbar-collapse" id="bs-example-navbar-collapse-1">          <ul class="nav navbar-nav">            <li class="active"><a href="#">Link <span class="sr-only">(current)</span></a></li>            <li><a href="#">Link</a></li>            <li class="dropdown">              <a href="#" class="dropdown-toggle" data-toggle="dropdown" role="button" aria-expanded="false">Dropdown <span class="caret"></span></a>              <ul class="dropdown-menu" role="menu">                <li><a href="#">Action</a></li>                <li><a href="#">Another action</a></li>                <li><a href="#">Something else here</a></li>                <li class="divider"></li>                <li><a href="#">Separated link</a></li>                <li class="divider"></li>                <li><a href="#">One more separated link</a></li>              </ul>            </li>          </ul>          <form class="navbar-form navbar-right" role="search">            <div class="form-group">              <input type="text" class="form-control" placeholder="Search">            </div>            <button type="submit" class="btn btn-default">Submit</button>          </form>        </div><!-- /.navbar-collapse -->      </div><!-- /.container-fluid -->    </nav>