bootstrap 4 中导航栏右侧的折叠按钮

Question

我正在使用 bootstrap 4 创建导航栏并进行了以下更改

在右侧设置折叠按钮
将 BrandName 移出折叠区域，使其始终位于左侧

这里是详细代码

<nav class="navbar navbar-dark bg-danger">
    <a class="navbar-brand" href="#">Navbar</a>
    <button class="navbar-toggler hidden-lg-up float-xs-right" type="button" data-toggle="collapse" data-target="#navbarResponsive" aria-controls="navbarResponsive" aria-expanded="false" aria-label="Toggle navigation"></button>
    <div class="collapse navbar-toggleable-md" id="navbarResponsive">           
        <ul class="nav navbar-nav float-md-right">
            <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">
                <a class="nav-link" href="#">Link</a>
            </li>
            <li class="nav-item dropdown">
                <a class="nav-link dropdown-toggle" href="http://example.com" id="responsiveNavbarDropdown" data-toggle="dropdown" aria-haspopup="true" aria-expanded="false">Dropdown</a>
                <div class="dropdown-menu" aria-labelledby="responsiveNavbarDropdown">
                    <a class="dropdown-item" href="#">Action</a>
                    <a class="dropdown-item" href="#">Another action</a>
                    <a class="dropdown-item" href="#">Something else here</a>
                </div>
            </li>
        </ul>          
    </div>
</nav>

我在单击汉堡图标时遇到问题，因为它没有正确显示我的折叠菜单。

我不知道我哪里弄错了

这是Pen

Answer 1

您必须将按钮和标题包裹在 div 中，然后将 class="clearfix-xs" 放入其中。

像这样：

<div class="clearfix-xs">
    <a class="navbar-brand" href="#">Navbar</a>
    <button class="navbar-toggler hidden-lg-up float-xs-right" type="button" data-toggle="collapse"
        data-target="#navbarResponsive" aria-controls="navbarResponsive" aria-expanded="false"
        aria-label="Toggle navigation">
    </button>
</div>

而 css 对于这个 class 是：

@media(max-width:768px) {
    .clearfix-xs:after {
        visibility: hidden;
        display: block;
        font-size: 0;
        content: " ";
        clear: both;
        height: 0;
    }
}

这是一个pen

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