我有一个bootstrap 4导航栏菜单:
<nav class="navbar navbar-expand-lg navbar-light bg-light">
<a class="navbar-brand" href="#">Navbar</a>
<button class="navbar-toggler" type="button" data-toggle="collapse" data-target="#navbarSupportedContent" aria-controls="navbarSupportedContent" aria-expanded="false" aria-label="Toggle navigation">
<span class="navbar-toggler-icon"></span>
</button>
<div class="collapse navbar-collapse" id="navbarSupportedContent">
<ul class="navbar-nav mr-auto">
<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 dropdown">
<a class="nav-link dropdown-toggle" href="#" id="navbarDropdown" role="button" data-toggle="dropdown" aria-haspopup="true" aria-expanded="false">
Dropdown
</a>
<div class="dropdown-menu" aria-labelledby="navbarDropdown">
<a class="dropdown-item" href="#">Action</a>
<a class="dropdown-item" href="#">Another action</a>
<div class="dropdown-divider"></div>
<a class="dropdown-item" href="#">Something else here</a>
</div>
</li>
<li class="nav-item">
<a class="nav-link disabled" href="#">Disabled</a>
</li>
</ul>
<form class="form-inline my-2 my-lg-0">
<input class="form-control mr-sm-2" type="search" placeholder="Search" aria-label="Search">
<button class="btn btn-outline-success my-2 my-sm-0" type="submit">Search</button>
</form>
</div>
</nav>
通常,点击下拉菜单会打开 . 它适用于移动设备,但我希望它在悬停大屏幕时打开 . 因此,当导航栏菜单折叠时,它应该在点击时打开,但如果不是,它应该在悬停时打开 . 我怎样才能做到这一点?
3 回答
尝试这个,我认为这是有效的
显示:阻止!重要;
如果它不起作用,那么使用JavaScript悬停属性
你可以通过简单地实现css来实现它 . 首先定义一个大于移动设备的媒体查询,然后像这样应用你的css:
它的下拉将在悬停时扩展,仅在大屏幕上(超过544px)
请查看演示Here
使用@media查询作为
navbar-expand-lg
的断点:https://www.codeply.com/go/uFPbKuv8GO