Bootstrap导航栏更改按钮和菜单位置

Question

我正在使用Bootstrap导航栏创建网站标题，如下所示：

<link href="https://stackpath.bootstrapcdn.com/bootstrap/4.1.3/css/bootstrap.min.css" rel="stylesheet"/>
<nav class="navbar navbar-expand-sm navbar-dark bg-dark">
  <a class="navbar-brand all-upper mb-1 h1 ml-1" href="#">Brand</a>
  <button class="navbar-toggler" type="button" data-toggle="collapse" data-target="#navbarToggle" aria-controls="navbarToggle" aria-expanded="false" aria-label="Toggle navigation">
        <span class="navbar-toggler-icon"></span>
    </button>

  <div class="navbar-expand">
    <button class="btn btn-primary mr-3" onclick="goToTrip()">Button</button>
  </div>

  <div class="collapse navbar-collapse">
    <ul class="navbar-nav ml-auto">
      <li class="nav-item">
        <a class="nav-link all-upper" href="index.html">Home</a>
      </li>
      <li class="nav-item">
        <a class="nav-link all-upper" href="#">Settings</a>
      </li>
      <li class="nav-item">
        <a class="nav-link all-upper" href="#">Log Out</a>
      </li>
    </ul>
  </div>
</nav>

因此，我在导航栏的右侧有一些链接，在左侧有一个按钮。

但是，当屏幕变小时，按钮和折叠菜单会像这样改变其位置：

如果没有该按钮，则一切正常：

那么如何将物品保留在原处？

Answer 1

@media screen and (max-width: 540px) {
   .navbar-brand{
       flex-grow: 2;
   }
}

<link href="https://stackpath.bootstrapcdn.com/bootstrap/4.1.3/css/bootstrap.min.css" rel="stylesheet"/>
    <nav class="navbar navbar-expand-sm navbar-dark bg-dark">
      <a class="navbar-brand all-upper mb-1 h1 ml-1" href="#">Brand</a>


      <div class="navbar-expand">
        <button class="btn btn-primary mr-3" onclick="goToTrip()">Button</button>
      </div>  
      <button class="navbar-toggler" type="button" data-toggle="collapse" data-target="#navbarToggle" aria-controls="navbarToggle" aria-expanded="false" aria-label="Toggle navigation">
            <span class="navbar-toggler-icon"></span>
        </button>

      <div class="collapse navbar-collapse">
        <ul class="navbar-nav ml-auto">
          <li class="nav-item">
            <a class="nav-link all-upper" href="index.html">Home</a>
          </li>
          <li class="nav-item">
            <a class="nav-link all-upper" href="#">Settings</a>
          </li>
          <li class="nav-item">
            <a class="nav-link all-upper" href="#">Log Out</a>
          </li>
        </ul>
      </div>
    </nav>

您可以尝试这个吗？您只是将导航栏切换器放在了错误的位置。

再试一次？这就是你想要的吗？

Answer 2

  <div class="navbar-expand">
    <button class="btn btn-primary mr-3" onclick="goToTrip()">Button</button>
  </div>

由于您已经在nav标签中定义了navbar-expand，因此div中不应存在navbar-expand-sm类

Answer 3

不需要额外的CSS。只需更改按钮的位置，然后使用mr-auto使其保持在左侧即可。

<nav class="navbar navbar-expand-sm navbar-dark bg-dark">
    <a class="navbar-brand all-upper mb-1 h1 ml-1" href="#">Brand</a>
    <div class="navbar-expand mr-auto">
        <button class="btn btn-primary mr-3" onclick="goToTrip()">Button</button>
    </div>
    <button class="navbar-toggler" type="button" data-toggle="collapse" data-target="#navbarToggle" aria-controls="navbarToggle" aria-expanded="false" aria-label="Toggle navigation">
        <span class="navbar-toggler-icon"></span>
    </button>
    <div class="collapse navbar-collapse" id="navbarToggle">
        <ul class="navbar-nav ml-auto">
            <li class="nav-item">
                <a class="nav-link all-upper" href="index.html">Home</a>
            </li>
            <li class="nav-item">
                <a class="nav-link all-upper" href="#">Settings</a>
            </li>
            <li class="nav-item">
                <a class="nav-link all-upper" href="#">Log Out</a>
            </li>
        </ul>
    </div>
</nav>

演示：https://www.codeply.com/go/vTTFyRkyoF