Bootstrap snippet and html example. Fix Title

<div class="container">
    <nav class="navbar navbar-default navbar-fixed-top">
        <div class="container-fluid">
            <div class="navbar-header">
                <button type="button" class="navbar-toggle collapsed" data-toggle="collapse" data-target="#navbar" aria-expanded="false" aria-controls="navbar">
                  <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="#">農業栽培管理系統</a>
            </div>
            <div id="navbar" class="navbar-collapse collapse">
                <ul class="nav navbar-nav">
                    <li class="active"><a href="#">Home</a></li>
                    <li class="dropdown">
                        <a href="#" class="dropdown-toggle" data-toggle="dropdown" role="button" aria-haspopup="true" aria-expanded="false">Dropdown <span class="caret"></span></a>
                        <ul class="dropdown-menu">
                          <li><a href="http://www.kimo.com">Action</a></li>
                          <li><a href="#">Another action</a></li>
                          <li><a href="#">Something else here</a></li>
                          <li role="separator" class="divider"></li>
                          <li class="dropdown-header">Nav header</li>
                          <li><a href="#">Separated link</a></li>
                          <li><a href="#">One more separated link</a></li>
                        </ul>
                    </li>
                </ul>
                <ul class="nav navbar-nav navbar-right">
                    <li class="active"><a href="./">Default <span class="sr-only">(current)</span></a></li>
                    <li><a href="../navbar-static-top/">Static top</a></li>
                    <li><a href="../navbar-fixed-top/">Fixed top</a></li>
                </ul>
            </div>
        </div>
    </nav>
</div>

body {
  min-height: 2000px;
  padding-top: 70px;
}