HTML – 如何更改bootstrap 4下拉颜色？

发布时间：2020-12-14 18:53:21 所属栏目：资源来源：网络整理

导读：我试图改变bootstrap 4下拉导航的背景和字体颜色. 我试着用 .nav.nav-tabs li.dropdown.active.open a,.nav.nav-tabs li.dropdown.active.open ul.dropdown-menu a:hover,.nav.nav-tabs li.dropdown.open a,.nav.nav-tabs li.dropdown.open ul.dropdown-menu

我试图改变bootstrap 4下拉导航的背景和字体颜色.

我试着用

.nav.nav-tabs > li.dropdown.active.open > a,.nav.nav-tabs > li.dropdown.active.open > ul.dropdown-menu a:hover,.nav.nav-tabs > li.dropdown.open > a,.nav.nav-tabs > li.dropdown.open > ul.dropdown-menu a:hover
{
  color: #fff;
  background-color: #b91773;
  border-color: #fff;
}

但这对我来说效果不佳.这是我的HTML：

<li class="nav-item dropdown">
        <a class="nav-link dropdown-toggle" href="http://example.com" id="navbarDropdownMenuLink" data-toggle="dropdown" aria-haspopup="true"
          aria-expanded="false">
  Dropdown link
</a>
        <div class="dropdown-menu" aria-labelledby="navbarDropdownMenuLink">
          <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>

解决方法

.dropdown {list-style: none; background: green; padding: 10px; display: inline-block;}
.dropdown .nav-link {color:#fff; text-decoration: none;}
.dropdown .dropdown-menu a{color: #000; text-decoration: none;}
.dropdown .btn {background: green; color:#fff;}
.dropdown .btn:hover {background: cyan; color:#000;}
.dropdown .btn:active {background: cyan; color:#000;}
.dropdown .btn:focus {background: cyan; color:#000;}
.dropdown-menu .dropdown-item {display: inline-block; width: 100%; padding: 10px 5px;}
.container .dropdown .dropdown-menu a:hover
{
  color: #fff;
  background-color: #b91773;
  border-color: #fff;
}

<!DOCTYPE html>
<html>
<head>
  <meta name="viewport" content="width=device-width,initial-scale=1">
  <link rel="stylesheet" href="https://maxcdn.bootstrapcdn.com/bootstrap/4.0.0-alpha.6/css/bootstrap.min.css">
  <script src="https://ajax.googleapis.com/ajax/libs/jquery/3.2.1/jquery.min.js"></script>
  <script src="https://cdnjs.cloudflare.com/ajax/libs/tether/1.4.0/js/tether.min.js"></script>
  <script src="https://maxcdn.bootstrapcdn.com/bootstrap/4.0.0-alpha.6/js/bootstrap.min.js"></script>
</head>
<body>

<div class="container">
  <li class="nav-item dropdown">
        <a class="nav-link dropdown-toggle" href="http://example.com" id="navbarDropdownMenuLink" data-toggle="dropdown" aria-haspopup="true"
          aria-expanded="false">
  Dropdown link
</a>
        <div class="dropdown-menu" aria-labelledby="navbarDropdownMenuLink">
          <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>
</div>

</body>
</html>

这是一些代码,希望它能帮到你.

编辑

现在工作正常

（编辑：李大同）

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