Bootstrap 4 导航，左侧切换，右侧按钮从移动折叠中排除？

你将不得不像这样使用 flexbox 工具......

https://www.codeply.com/go/xXGsq5MVdi

<nav class="navbar navbar-fixed-top navbar-toggleable-sm navbar-inverse bg-inverse">
    <div class="container d-flex flex-row flex-md-nowrap flex-wrap">
    <a href="#" class="hidden-lg-up my-2 mr-3" data-toggle="collapse" data-target="#navbarCollapse" aria-controls="navbarCollapse" aria-expanded="false">
        <i class="fa fa-bars text-white"></i>
    </a>
    <a class="navbar-brand" href="#">Brand</a>
    <div class="navbar-collapse collapse flex-md-unordered flex-last" id="navbarCollapse">
        <ul class="navbar-nav">
            <li class="nav-item active">
                <a class="nav-link" href="#">Link <span class="sr-only">Home</span></a>
            </li>
            <li class="nav-item">
                <a class="nav-link" href="#">Link</a>
            </li>
            <li class="nav-item">
                <a class="nav-link" href="#">Link</a>
            </li>
        </ul>
    </div>
    <div class="d-flex ml-auto">
         <ul class="navbar-nav">
            <li class="nav-item">
                <a class="nav-link" href="#">Right</a>
            </li>
        </ul>
    </div>
    <div class="hidden-md-up w-100"><!--hidden spacer to force wrap--></div>
    </div>
</nav>

https://www.codeply.com/go/xXGsq5MVdi