在这里完美运行 CodePen ：
http://codepen.io/ekilja01/pen/pEXLNY
并且在 jsfiddle 中不起作用：
http://jsfiddle.net/v9ec3/963/
不起作用我的意思是导航栏完全搞砸了。添加外部资源。怎么了？请帮忙！
<link href='http://fonts.googleapis.com/css?family=Lato&subset=latin,latin-ext' rel='stylesheet' type='text/css'>
<script src="https://use.fontawesome.com/43f8201759.js"></script>
<!-- Navbar style available in Bootstrap framework-->
<nav class="navbar navbar-fixed-top">
<!-- /end-->
<!-- Anything that has to be responsive we are going to keep inside the Bootstrap grid -->
<div class="container-fluid">
<!-- /end -->
<div class="navbar-header">
<button type="button" class="navbar-toggle btn-lg" data-toggle="collapse" data-target=".navbar-collapse" id="btnnavbar">
<!-- For screen readers only -->
<span class="sr-only">Toggle navigation</span>
<!-- /end -->
<!-- Hamburger menu button appears when browser window has been shrinked -->
<span class="icon-bar"></span>
<span class="icon-bar"></span>
<span class="icon-bar"></span>
</button>
<!-- /end -->
<!-- Brand and toggle get grouped for better mobile display -->
<a class="navbar-brand " href="http://codepen.io/ekilja01"><i class="fa fa-area-chart about" id="large"></i></a>
</div>
<div class="navbar-collapse collapse">
<ul class="nav navbar-nav navbar-right">
<li id="btnhome"><a href="#parallax"><strong>About</strong></a></li>
<li id="btnhome"><a href="#portfolio"><strong>Portfolio</strong></a></li>
<li id="btnhome"><a href="#"><strong>Contact</strong></a></li>
</ul>
</div>
</div>
</nav>
<section id="parallax">
<div class="container">
<div class="row">
<div class="col-lg-12 col-md-12 text-center">
<h1 class="about">web developer<br><i class="fa fa-code about"></i></h1>
</div>
</div>
<!-- /.row -->
</div>
<!-- /.container -->
</section>
<section id="portfolio">
<div class="row">
<div class="col-lg-12 col-md-12 text-center">
<h1>My skillset</h1>
<p class="lead"></p>
<div class="row">
<div class="col-sm-3">
<img src="http://res.cloudinary.com/ekilja01/image/upload/v1478127238/html5_yoj7se.png" alt="html">
<p><strong>HTML</strong></p>
</div>
<div class="col-sm-3">
<img src="http://res.cloudinary.com/ekilja01/image/upload/v1478127238/css3_bso6y6.png" alt="css"><p><strong>CSS</strong></p>
</div>
<div class="col-sm-3">
<img src="http://res.cloudinary.com/ekilja01/image/upload/v1478127238/js_mnqfxw.png" alt="javascript">
<p><strong>JavaScript</strong></p>
</div>
<div class="col-sm-3">
<img src="http://res.cloudinary.com/ekilja01/image/upload/v1478127237/jquery_qkehtt.png" alt="jquery">
<p><strong>jQuery</strong></p>
</div>
</div>
</div>
</div>
</div>
</div>
</div>
</div>
<!-- /.row -->
</div>
<!-- /.container -->
</section>
and CSS
.navbar {
min-height: 80px;
margin-bottom: 0;
}
.navbar-toggle {
color: black;
}
#btnnavbar {
margin-top: 20px;
color: black;
}
#btnhome {
margin-top: 16px;
}
#large {
font-size: 100px
}
#imgbrand {
margin-top: -70px;
margin-left: px;
height: 220px;
width: 280px;
}
#firstpage {
margin-top: 90px;
}
#parallax {
/* The image used */
padding-top: 200px;
margin-top: 0px;
background-image: url("http://res.cloudinary.com/ekilja01/image/upload/v1478169039/codecademy_600_qd7qjv.jpg");
/* Set a specific height */
height: 500px;
/* Create the parallax scrolling effect */
background-attachment: fixed;
background-position: center;
background-repeat: no-repeat;
background-size: cover;
color: white;
}
.about {
font-family: futura-pt, sans-serif;
font-weight: 900;
background: -webkit-linear-gradient(#D31027, #EA384D);
-webkit-background-clip: text;
-webkit-text-fill-color: transparent;
}
.lead {
font-family: 'Lato', sans-serif;
}
#portfolio {
height: 500px;
padding-top: 200px;
}
.col-sm-3 {
display:inline-block;
}
/* link */
.navbar .navbar-nav > li > a {
background: -webkit-linear-gradient(#D31027, #EA384D);
-webkit-background-clip: text;
-webkit-text-fill-color: transparent;
}
/* mobile version */
.navbar .navbar-toggle {
border-color: #DDD;
}
.navbar .navbar-toggle:hover,
.navbar .navbar-toggle:focus {
background-color: #DDD;
}
.navbar .navbar-toggle .icon-bar {
background-color: #CCC;
}
@media (max-width: 767px) {
.navbar .navbar-nav .open .dropdown-menu > li > a {
color: #777;
}
.navbar .navbar-nav .open .dropdown-menu > li > a:hover,
.navbar .navbar-nav .open .dropdown-menu > li > a:focus {
color: #333;
}
}
