Bootstrap 4 多个固定顶部导航栏 [英] Bootstrap 4 Multiple fixed-top navbars

问题描述

是否可以在 Bootstrap 4 中让多个固定顶部导航栏相互显示?

当前 1 覆盖了另一个，这不是我想要的.

解决方案

是的，这是可能的，但您必须相应地定位第二个.导航栏的高度约为 56 像素.

.fixed-top-2 {边距顶部:56px；}身体 {填充顶部:105px；}<nav class="navbar navbar-toggleable-sm bg-faded navbar-light fixed-top fixed-top-2"><button class="navbar-toggler navbar-toggler-right" type="button" data-toggle="collapse" data-target="#navbar1"><span class="navbar-toggler-icon"></span><a href="/" class="navbar-brand">一个</a><div class="navbar-collapse collapse" id="navbar1"><ul class="navbar-nav">..

</nav><nav class="navbar navbar-toggleable-sm bg-inverse navbar-inverse fixed-top"><button class="navbar-toggler navbar-toggler-right" type="button" data-toggle="collapse" data-target="#navbar2"><span class="navbar-toggler-icon"></span><a href="/" class="navbar-brand">两个</a><div class="navbar-collapse collapse" id="navbar2"><ul class="navbar-nav">..

</nav>

演示:Bootstrap 4 多个固定顶部导航栏

在某些情况下，最好使用 单个 fixed-top DIV 包含两者.

另见:
标题后的Bootstrap 4 Navbar粘性
Bootstrap 4 将两个导航栏折叠成一个切换按钮

Is it possible to have multiple fixed-top navbars in Bootstrap 4 showing under each other?

The 1 currently overlays the other which is not what I want.

解决方案

Yes, it's possible but you have to position the 2nd one accordingly. The height of the Navbar is ~56px.

.fixed-top-2 {
    margin-top: 56px;
}

body {
    padding-top: 105px;
}

<nav class="navbar navbar-toggleable-sm bg-faded navbar-light fixed-top fixed-top-2">
    <button class="navbar-toggler navbar-toggler-right" type="button" data-toggle="collapse" data-target="#navbar1">
        <span class="navbar-toggler-icon"></span>
    </button>
    <a href="/" class="navbar-brand">One</a>
    <div class="navbar-collapse collapse" id="navbar1">
        <ul class="navbar-nav">
            ..
        </ul>
    </div>
</nav>

<nav class="navbar navbar-toggleable-sm bg-inverse navbar-inverse fixed-top">
    <button class="navbar-toggler navbar-toggler-right" type="button" data-toggle="collapse" data-target="#navbar2">
        <span class="navbar-toggler-icon"></span>
    </button>
    <a href="/" class="navbar-brand">Two</a>
    <div class="navbar-collapse collapse" id="navbar2">
        <ul class="navbar-nav">
            ..
        </ul>
    </div>
</nav>

Demo: Bootstrap 4 Multiple fixed-top Navbars

In some scenarios, it may be better to use a single fixed-top DIV to contain both.

Also see:
Bootstrap 4 Navbar sticky after header
Bootstrap 4 collapsing two navbars into one toggle button

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