我正在为我的网站使用 Bootstrap 3。我在页面上有通常的 .navbar，它运行良好，除了一件不合时宜的事情。当屏幕缩小到汉堡菜单时，.navbar-collapse 和 .navbar-header 之间有一条分界线。我在图片中将其加粗了。
HTML
<!DOCTYPE html>
<html lang="en">
<head>
<meta charset="utf-8">
<meta name="viewport" content="width=device-width, initial-scale=1">
<meta http-equiv="X-UA-Compatible" content="IE=Edge">
<title>Stuson.com</title>
<meta name="description" content="Stuson.com is a social media platform for students, by students.">
<meta name="author" content="Stuson Dev Team">
<link href="https://fonts.googleapis.com/css?family=PT+Sans|Roboto" rel="stylesheet">
<link href="https://maxcdn.bootstrapcdn.com/bootstrap/3.3.7/css/bootstrap.min.css" rel="stylesheet" integrity="sha384-BVYiiSIFeK1dGmJRAkycuHAHRg32OmUcww7on3RYdg4Va+PmSTsz/K68vbdEjh4u" crossorigin="anonymous">
<link href="css\essentials.css" rel="stylesheet">
</head>
<body>
<nav class="navbar navbar-default" role="navigation">
<div class="container-fluid">
<!-- Brand and toggle get grouped for better mobile display -->
<div class="navbar-header">
<button type="button" class="navbar-toggle collapsed" data-toggle="collapse" data-target="#bs-example-navbar-collapse-1" aria-expanded="false">
<span class="sr-only">Toggle navigation</span>
<span class="icon-bar"></span>
<span class="icon-bar"></span>
<span class="icon-bar"></span>
</button>
<a class="navbar-brand" href="#">Brand</a>
</div>
<!-- Collect the nav links, forms, and other content for toggling -->
<div class="collapse navbar-collapse" id="bs-example-navbar-collapse-1">
<ul class="nav navbar-nav">
<li><a href="#">Link</a></li>
<li><a href="#">Link</a></li>
<li class="dropdown">
<a href="#" class="dropdown-toggle" data-toggle="dropdown" role="button" aria-haspopup="true" aria-expanded="false">Dropdown <span class="caret"></span></a>
<ul class="dropdown-menu">
<li><a href="#">Action</a></li>
<li><a href="#">Another action</a></li>
<li><a href="#">Something else here</a></li>
<li role="separator" class="divider"></li>
<li><a href="#">Separated link</a></li>
<li role="separator" class="divider"></li>
<li><a href="#">One more separated link</a></li>
</ul>
</li>
</ul>
<form class="navbar-form navbar-left" role="form">
<div class="form-group">
<input type="text" class="form-control hidden-xs" placeholder="Search">
</div>
<button type="submit" class="btn btn-default">
<span class="glyphicon glyphicon-search" aria-hidden="true"></span>
<span class="hidden-lg hidden-md">Search</span>
</button>
</form>
<ul class="nav navbar-nav navbar-right">
<li><a href="#">Link</a></li>
<li class="dropdown">
<a href="#" class="dropdown-toggle" data-toggle="dropdown" role="button" aria-haspopup="true" aria-expanded="false">Dropdown <span class="caret"></span></a>
<ul class="dropdown-menu">
<li><a href="#">Action</a></li>
<li><a href="#">Another action</a></li>
<li><a href="#">Something else here</a></li>
<li role="separator" class="divider"></li>
<li><a href="#">Separated link</a></li>
</ul>
</li>
</ul>
</div><!-- /.navbar-collapse -->
</div><!-- /.container-fluid -->
</nav>
<script src="http://code.jquery.com/jquery-3.1.1.js" integrity="sha256-16cdPddA6VdVInumRGo6IbivbERE8p7CQR3HzTBuELA=" crossorigin="anonymous"></script>
<script src="https://maxcdn.bootstrapcdn.com/bootstrap/3.3.7/js/bootstrap.min.js" integrity="sha384-Tc5IQib027qvyjSMfHjOMaLkfuWVxZxUPnCJA7l2mCWNIpG9mGCD8wGNIcPD7Txa" crossorigin="anonymous"></script>
<script src="js/essentials.js"></script>
</body>
</html>
CSS
#noBorder {
border-style: none;
border-radius: 0;
}
#transparent {
background-color: transparent;
}
body {
font-family: "PT Sans", sans-serif;
font-weight: 300;
}
.navbar {
border-style: none;
border-radius: 0;
background-color: #38ba7d;
}
.navbar .navbar-header {
border-style: none;
border-radius: 0;
}
.navbar .navbar-header > .navbar-toggle,
.navbar .navbar-header .navbar-toggle:hover,
.navbar .navbar-header .navbar-toggle:focus {
border-style: none;
border-radius: 0;
background-color: transparent;
}
.navbar .navbar-header .navbar-brand {
color: #fff;
}
.navbar .navbar-collapse {
border-style: none;
border-radius: 0;
}
.navbar .navbar-collapse ul li > a {
color: #fff;
}
.navbar .navbar-collapse form {
display: flex;
flex-direction: row;
border-style: none;
border-radius: 0;
}
.navbar .navbar-collapse form input {
width: 250px;
}
@media (max-width: 786px) {
.navbar .navbar-collapse form input {
width: 10px;
}
}
.navbar .navbar-collapse form .btn {
background-color: transparent;
border-style: none;
border-radius: 0;
}
我怎样才能避免这种情况？我尝试在 .navbar-collapse 和 .navbar-header 上使用 border: none，但无济于事。
最佳答案
实际上“边框”是由 box-shadow 引起的，所以添加:
.navbar .navbar-collapse{
box-shadow:none;
}
关于html - 摆脱导航栏上方的分割隔线，Bootstrap3，我们在Stack Overflow上找到一个类似的问题： https://stackoverflow.com/questions/42053937/