导航条在bootstrap中工作在移动设备上的4个页面中的2个.代码对所有人都是一样的

我个人网站的导航条只适用于移动设备上的4个页面中的2个。它在台式机上运行得非常好。我检查了几次代码，然后我

1. 似乎找不到它们之间的任何差异，而
2. 无法找到或找出解决方案。

链接到我的网页是www.deepshah.co，我会把HTML代码贴在下面。

工作页面导航条代码:

<div class="navbar navbar-default navbar-fixed-top" role="navigation">
    <div class="container">
        <div class="navbar-header">
            <button type="button" class="navbar-toggle" data-toggle="collapse" data-target=".navbar-collapse">
                <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="index.html">DEEP SHAH</a>
        </div>
        <div class="navbar-collapse collapse">
            <ul class="nav navbar-nav navbar-right">
                <li><a href="/index.html">Home</a></li>
                <li><a href="/about.html">About Me</a></li>
                <!-- <li><a href="/portfolio/">Portfolio</a></li> -->
                <li><a href="/photography.html">Photography</a></li>
                <!-- <li><a href="#">Blog</a></li> -->
                <li class="active"><a href="/contact.html">Contact</a></li>
            </ul>
        </div><!--/.nav-collapse-->
    </div>
</div>

导航条代码:

<div class="navbar navbar-default navbar-fixed-top" role="navigation">
        <div class="container">
            <div class="navbar-header">
                <button type="button" class="navbar-toggle" data-toggle="collapse" data-target=".navbar-collapse">
                    <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="index.html">DEEP SHAH</a>
            </div>
            <div class="navbar-collapse collapse">
                <ul class="nav navbar-nav navbar-right">
                    <li><a href="/index.html">Home</a></li>
                    <li><a href="/about.html">About Me</a></li>
                    <!-- <li><a href="/portfolio/">Portfolio</a></li> -->
                    <li class="active"><a href="/photography.html">Photography</a></li>
                    <!-- <li><a href="#">Blog</a></li> -->
                    <li><a href="/contact.html">Contact</a></li>
                </ul>
            </div><!--/.nav-collapse-->
        </div>
    </div>

非常感谢!