附加脚本时不显示Bootstrap导航栏链接

Question

我正在制作一个基于引导程序的站点，我不知道我有什么错误，我没有在底部附加bootstrap.min.js和jquery。我无法减少媒体查询中链接的字体大小，并且在汉堡包视图中我点击了Nothing显示的图标。如果JS小提琴，我将添加我的完整脚本，我将在这里附加导航条代码。 https://jsfiddle.net/kxngo67r/1/ 我不知道如何将引导程序添加到jsfiddle

这是我的第一个付费项目，我搞砸了，请告诉我如何更改字体大小以及如何显示链接

HTML

<nav class="navbar navbar-default clearfix">
            <div class="container-fluid">

            <div class="navbar-header">
              <button type="button" class="navbar-toggle collapsed" data-toggle="collapse" data-target="#bs-example-navbar-collapse-1" aria-expanded="false">
                <span class="sr-only">Toggle navigation</span>
                <span class="icon-bar"></span>
                <span class="icon-bar"></span>
                <span class="icon-bar"></span>
              </button>
            </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=""><a href="#">Home<span class="sr-only">(current)</span></a></li>
            <li> <a href="aboutus.html"><span style="white-space: nowrap">About Us</span></a> </li>
            <li> <a href="whoweare.html"><span style="white-space: nowrap">Who We Are</span></a> </li>
            <li> <a href="mission.html">Mission</a> </li>
            <li> <a href="activities.html">Activities</a> </li>
            <li> <a href="gallery.html">Gallery</a> </li>
            <li> <a href="donate.html">Donate</a> </li>
            <li> <a href="sitemap.html">Sitemap</a> </li>
            <li> <a href="contactus.html"><span style="white-space: nowrap">Contact Us</span></a> </li>

          </ul>


        </div><!-- /.navbar-collapse -->
    </div><!-- /.container-fluid -->
    </nav>

CSS

 nav {
                width: 100%;
                height: 40px;
                background: -webkit-linear-gradient(#3f9a15, #388813, #3f9a15, #388813, #3f9a15);
                background: -o-linear-gradient(#3f9a15, #388813, #3f9a15, #388813, #3f9a15);
                background: linear-gradient(#3f9a15, #388813, #3f9a15, #388813, #3f9a15);
                border-radius: 6px !important;
                -moz-border-radius: 6px !important;
            }

        .nav a{
            color: white !important;
            font-size: 1.5em !important;
        }