我在一个网站上工作,我从Bootstrap网站上的仪表板示例开始。但是,当我在导航栏中添加一个下拉菜单时,它会留在导航栏中并破坏整个内容。我无法弄清楚导致此问题的样式。该代码似乎太多了,无法粘贴到这里,所以我将其放入Codepen中:
https://codepen.io/andersmmg/pen/wOgmby

这是为了使仪表板样式正常工作而添加的css:

body {
  font-size: .875rem;
}

.feather {
  width: 16px;
  height: 16px;
  vertical-align: text-bottom;
}

/*
 * Sidebar
 */

.sidebar {
  position: fixed;
  top: 0;
  bottom: 0;
  left: 0;
  z-index: 100; /* Behind the navbar */
  padding: 48px 0 0; /* Height of navbar */
  box-shadow: inset -1px 0 0 rgba(0, 0, 0, .1);
}

.sidebar-sticky {
  position: relative;
  top: 0;
  height: calc(100vh - 48px);
  padding-top: .5rem;
  overflow-x: hidden;
  overflow-y: auto; /* Scrollable contents if viewport is shorter than content. */
}

@supports ((position: -webkit-sticky) or (position: sticky)) {
  .sidebar-sticky {
    position: -webkit-sticky;
    position: sticky;
  }
}

.sidebar .nav-link {
  font-weight: 500;
  color: #333;
}

.sidebar .nav-link .feather {
  margin-right: 4px;
  color: #999;
}

.sidebar .nav-link.active {
  color: #007bff;
}

.sidebar .nav-link:hover .feather,
.sidebar .nav-link.active .feather {
  color: inherit;
}

.sidebar-heading {
  font-size: .75rem;
  text-transform: uppercase;
}

/*
 * Content
 */

[role="main"] {
  padding-top: 48px; /* Space for fixed navbar */
}

/*
 * Navbar
 */

.navbar-brand {
  padding-top: .75rem;
  padding-bottom: .75rem;
  font-size: 1rem;
  background-color: rgba(0, 0, 0, .25);
  box-shadow: inset -1px 0 0 rgba(0, 0, 0, .25);
}

.navbar .form-control {
  padding: .75rem 1rem;
  border-width: 0;
  border-radius: 0;
}

.navbar .form-control::placeholder {
    color: white;
}

.navbar .form-control:focus::placeholder {
    color: rgba(0, 0, 0, 0.46);
}

.form-control-dark {
  color: #fff;
  background-color: rgba(255, 255, 255, .1);
  border-color: rgba(255, 255, 255, .1);
}

.form-control-dark:focus {
  border-color: transparent;
  box-shadow: 0 0 0 3px rgba(255, 255, 255, .25);
}

最佳答案

我刚刚删除了下拉菜单中的代码,并用文档中的代码示例替换了代码,并且下拉菜单现在可以正常运行。我认为您的某些代码不允许下拉列表存在于其容器之外,这导致其父容器扩展(即ulli元素)

<nav class="navbar navbar-dark fixed-top bg-dark flex-md-nowrap p-0 shadow">
  <a class="navbar-brand col-sm-3 col-md-2 mr-0" href="index.php">Store Manager</a>
  <input class="form-control form-control-dark w-100" type="text" placeholder="Search" aria-label="Search">
  <div class="dropdown dropleft">
    <button class="btn btn-secondary dropdown-toggle" type="button" id="dropdownMenuButton" data-toggle="dropdown" aria-haspopup="true" aria-expanded="false">
      andersmmg
    </button>
    <div class="dropdown-menu" aria-labelledby="dropdownMenuButton">
      <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>
  </div>
</nav>


您仍然需要将按钮样式设置为所需的颜色,但是功能仍然存在。我更改了菜单以使其显示在左侧(dropleft),因此它不会在页面上显示。您可以看到我的Fiddle of working solution here。希望能有所帮助。

关于css - 导航栏内部的Bootstrap导航栏下拉菜单,我们在Stack Overflow上找到一个类似的问题:https://stackoverflow.com/questions/55029499/

10-14 14:38
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