汉堡菜单在iOS上不起作用

Question

您知道汉堡菜单在iOS上无法正常工作的问题吗？ 对于我的网站，它可以从Android正常运行，但不能在iOS上正常运行http://lastmile-works.com/recruitment/

这是我在具有菜单部分的标题中的代码

<section class="topHeader">
    <nav class="navbar navbar-inverse padding-0">
        <div class="navbar-header toggle-btn clearfix">
            <a class="navbar-toggle" data-toggle="collapse" data-target=".main-navigation">
                <span class="sr-only">Toggle navigation</span>
                <span class="Hamburger Hamburger__bar--first"></span>
                <span class="Hamburger Hamburger__bar--middle"></span>
                <span class="Hamburger Hamburger__bar--last"></span>
            </a>
        </div>
        <div class="wrapper-lag">
            <ul class="lang-dis">
                <li><a class="lag-en" href="index.html">EN</a></li>
                <li><a  class="lineup-icon" href="#">|</a></li>
                <li><a class="lag-kh" href="index-km.html">KH</a></li>
            </ul>
        </div> 
        <div class="container">
            <div class="col-xs-12 col-sm-12 col-md-10">
                <div class="row">
                    <ul class="nav navbar-nav mymenu navbar-right">
                        <li><a href="#message">Message</a></li>
                        <li><a href="#aboutus">About</a></li>
                        <li><a href="#interview">Interview</a></li>
                        <li><a href="#benefits">Advantages</a></li>
                        <li><a href="#jobdes">Job Description</a></li>
                        <ul class="lang">
                            <li><a class="lag-en active-lang" href="index.html">EN</a></li>
                            <li><a  class="lineup-icon">|</a></li>
                            <li><a class="lag-kh" href="index-km.html">KH</a></li>
                        </ul>
                    </ul>
                </div>
            </div>
</section>

请帮我。