【发布时间】：2018-07-19 00:42:17
【问题描述】：
我正在尝试制作一个悬停在其他 2 个项目之上的导航栏，然后当它变为移动大小时，我希望它折叠但将移动图标放在屏幕的右上角，如下所示：
我不知道如何让它悬停在其他两个项目的顶部，我试图摆弄 z-index 和偏移量，但我无法让它在没有白色的情况下位于两者的中心侧面的空间。
#mu-carousel .carousel-item {
max-height: 480px;
}
#mu-header {
background: lightgrey;
height: 135px;
}<link rel="stylesheet" href="https://maxcdn.bootstrapcdn.com/bootstrap/4.0.0/css/bootstrap.min.css" integrity="sha384-Gn5384xqQ1aoWXA+058RXPxPg6fy4IWvTNh0E263XmFcJlSAwiGgFAW/dAiS6JXm" crossorigin="anonymous">
<script src="https://code.jquery.com/jquery-3.2.1.slim.min.js" integrity="sha384-KJ3o2DKtIkvYIK3UENzmM7KCkRr/rE9/Qpg6aAZGJwFDMVNA/GpGFF93hXpG5KkN" crossorigin="anonymous"></script>
<script src="https://cdnjs.cloudflare.com/ajax/libs/popper.js/1.12.9/umd/popper.min.js" integrity="sha384-ApNbgh9B+Y1QKtv3Rn7W3mgPxhU9K/ScQsAP7hUibX39j7fakFPskvXusvfa0b4Q" crossorigin="anonymous"></script>
<script src="https://maxcdn.bootstrapcdn.com/bootstrap/4.0.0/js/bootstrap.min.js" integrity="sha384-JZR6Spejh4U02d8jOt6vLEHfe/JQGiRRSQQxSfFWpi1MquVdAyjUar5+76PVCmYl" crossorigin="anonymous"></script>
<body>
<header id="mu-header">
<div class="container">
<div class="row">
<div class="col-md-6">
<span>LOGO/NAME</span>
</div>
<div class="col-md-2">
<span>TEXT</span>
</div>
<div class="col-md-2">
<span>TEXT</span>
</div>
<div class="col-md-2">
<span>TEXT</span>
</div>
</div>
</div>
</header>
<div class="container">
<div class="row">
<div class="col-md-12">
<nav class="navbar navbar-expand-md navbar-light bg-faded">
<button class="navbar-toggler navbar-toggler-right" type="button" data-toggle="collapse" data-target="#navbarNavDropdown" aria-controls="navbarNavDropdown" aria-expanded="false" aria-label="Toggle navigation">
<span class="navbar-toggler-icon"></span>
</button>
<div class="collapse navbar-collapse" id="navbarNavDropdown">
<ul class="navbar-nav">
<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="#">Features</a>
</li>
<li class="nav-item">
<a class="nav-link" href="#">Pricing</a>
</li>
<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>
</ul>
</div>
</nav>
</div>
</div>
</div>
<section id="mu-carousel">
<div id="carouselExampleIndicators" class="carousel slide" data-ride="carousel">
<div class="carousel-inner" role="listbox">
<div class="carousel-item active">
<img class="d-block img-fluid" src="https://static.pexels.com/photos/93140/pexels-photo-93140.jpeg" alt="First slide">
</div>
<div class="carousel-item">
<img class="d-block img-fluid" src="https://static.pexels.com/photos/93140/pexels-photo-93140.jpeg" alt="Second slide">
</div>
<div class="carousel-item">
<img class="d-block img-fluid" src="https://static.pexels.com/photos/93140/pexels-photo-93140.jpeg" alt="Third slide">
</div>
</div>
<a class="carousel-control-prev" href="#carouselExampleIndicators" role="button" data-slide="prev">
<span class="carousel-control-prev-icon" aria-hidden="true"></span>
<span class="sr-only">Previous</span>
</a>
<a class="carousel-control-next" href="#carouselExampleIndicators" role="button" data-slide="next">
<span class="carousel-control-next-icon" aria-hidden="true"></span>
<span class="sr-only">Next</span>
</a>
</div>
</section>
<!-- JavaScript -->
<script src="vendor/jquery/jquery.min.js"></script>
<script src="vendor/bootstrap/js/bootstrap.bundle.js"></script>
<!-- Custom scripts for this template -->
<script src="js/creative.js"></script>
</body>【问题讨论】：
-
导航栏应该悬停在哪些“其他项目”上？
-
第一个是带有徽标和文本的标题部分，另一个是轮播项目。在我发布的图片中，顶栏应该是标题。
-
啊哈，所以导航栏应该悬停在这些项目之间，而不是在顶部。
-
也许这会是一种更好的技术表达方式，但在视觉上它会悬停在顶部，很抱歉造成混乱。
-
“我不能让它正中”——这是否意味着导航栏项目必须居中？
标签： html css position bootstrap-4 navbar