Html bootstrap 4混合可折叠和不可折叠导航元素

我有一个引导导航栏，我想有可折叠和不可折叠的菜单项

我的代码如下：

搜寻

首先要注意的是，在最新版本的引导中已重命名<代码>隐藏md已替换为

.d-md-none

等

其次，我确保声明

flex-direction:row

打开

.navbar nav

以水平而不是垂直排列其子对象

.navbar.navbar导航{
弯曲方向：行；
}

搜寻

有几种不同的方法可以实现这一点。请记住，在Bootstrap 4.1中，

navbar Togleable

类已替换为

navbar expand-

在第一个导航栏导航上使用

flex row

，这样它就不会在较小的屏幕上包装/堆叠在一列中。在折叠上使用

flex-grow-1

，以便扩展剩余宽度

演示：

搜寻

<nav class="navbar clg navbar-light fixed-top">
    <div class="container-fluid">
        <a class="navbar-brand" href="https://ngohub.asia">
            <img src="//placehold.it/40?text=sm" class="d-lg-none d-inline">
            <img src="//placehold.it/100x30?text=lg" class="d-lg-inline d-none">
        </a>
        <div class="mr-auto flex-shrink-1">
            <ul class="navbar-nav flex-row">
                <li class="nav-item active">
                    <a class="nav-link" href="#">Login <span class="sr-only">(current)</span></a>
                </li>
                <li class="nav-item px-1">
                    <a class="nav-link">|</a>
                </li>
                <li class="nav-item">
                    <a class="nav-link" href="#">Sign Up </a>
                </li>
            </ul>
        </div>
        <button class="navbar-toggler" type="button" data-toggle="collapse" data-target="#navbarSupportedContent" aria-controls="navbarSupportedContent" aria-expanded="false" aria-label="Toggle navigation">
            <span class="navbar-toggler-icon"></span>
        </button>
        <div class="collapse navbar-collapse flex-grow-1" id="navbarSupportedContent">
            <ul class="navbar-nav ml-auto">
                <li class="nav-item active">
                    <a class="nav-link" href="#">Home <span class="sr-only">(current)</span></a>
                </li>
                <li class="nav-item">
                    <a class="nav-link" href="#">Link</a>
                </li>
                <li class="nav-item dropdown">
                    <a class="nav-link dropdown-toggle" href="#" id="navbarDropdown" role="button" data-toggle="dropdown" aria-haspopup="true" aria-expanded="false">
                Dropdown
              </a>
                    <div class="dropdown-menu" aria-labelledby="navbarDropdown">
                        <a class="dropdown-item" href="#">Action</a>
                        <a class="dropdown-item" href="#">Another action</a>
                        <div class="dropdown-divider"></div>
                        <a class="dropdown-item" href="#">Something else here</a>
                    </div>
                </li>
                <li class="nav-item">
                    <a class="nav-link disabled" href="#">Disabled</a>
                </li>
            </ul>
            <form class="form-inline d-inline my-2 my-lg-0">
                <input class="form-control mr-sm-2" type="search" placeholder="Search" aria-label="Search">
                <button class="btn btn-outline-success my-2 my-sm-0" type="submit">Search</button>
            </form>
        </div>
    </div>
</nav>