我正在使用以下 home.html 文件和一个名为“navbar.css”的外部 css 文件，我在“bootstrap.min.css”之后加载该文件。我试图通过将名为“custom-menu-item”的类分配给适当的元素并更改“navbar.css”中的填充来完成工作(但不会对填充进行任何更改)
.custom-menu-item{
padding:10px 13px;
} <!DOCTYPE html>
<html >
<head>
<title>Home</title>
<meta charset="utf-8">
<meta name="viewport" content="width=device-width,initial-scale=1.0">
<link rel="stylesheet" type="text/css" href="bootstrap-3.3.7-dist/css/bootstrap.min.css">
<script type="text/javascript" src="jquery.min.js"></script>
<script type="text/javascript" src="bootstrap-3.3.7-dist/js/bootstrap.min.js"></script>
<link rel="stylesheet" type="text/css" href="bootstrap-3.3.7-dist/css/custom/navbar.css">
</head>
<body>
<nav class="navbar navbar-default">
<div class="container-fluid custom-coontainer-fluid">
<div class="navbar-header ">
<button type="button" class="navbar-toggle collapsed" data-toggle="collapse" data-target="#my-navbar" 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>
</div>
<div class="collapse navbar-collapse" id="my-navbar">
<ul class="nav navbar-nav">
<li class="active"><a href="#" class="custom-menu-item">Home <span class="sr-only">(current)</span></a></li>
<li class="dropdown">
<a class="dropdown-toggle custom-menu-item" data-toggle="dropdown" id="about-us-menu" href="#" role="button" aria-haspopup="true" aria-expanded="false">About Us <span class="caret"></span></a>
<ul class="dropdown-menu" role="menu" aria-labelledby="about-us-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>
<li class="dropdown ">
<a class="dropdown-toggle custom-menu-item" data-toggle="dropdown" id="admin-info-menu" href="#" role="button" aria-haspopup="true" aria-expanded="false">Administration <span class="caret"></span></a>
<ul class="dropdown-menu" role="menu" aria-labelledby="admin-info-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>
</div>
</nav>
</body>
</html>最佳答案
在 boostrap css 文件后添加您自己的样式:
.nav > li > a {
padding: 40px;
}
<!DOCTYPE html>
<html >
<head>
<title>Home</title>
<meta charset="utf-8">
<meta name="viewport" content="width=device-width,initial-scale=1.0">
<script src="https://cdnjs.cloudflare.com/ajax/libs/jquery/3.2.1/jquery.min.js"></script>
<script src="https://cdnjs.cloudflare.com/ajax/libs/twitter-bootstrap/3.3.7/js/bootstrap.min.js"></script>
<link rel="stylesheet" type="text/css" href="https://cdnjs.cloudflare.com/ajax/libs/twitter-bootstrap/3.3.7/css/bootstrap.min.css">
<style>
.nav > li > a {
padding: 40px;
}
</style>
</head>
<body>
<nav class="navbar navbar-default">
<div class="container-fluid custom-coontainer-fluid">
<div class="navbar-header ">
<button type="button" class="navbar-toggle collapsed" data-toggle="collapse" data-target="#my-navbar" 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>
</div>
<div class="collapse navbar-collapse" id="my-navbar">
<ul class="nav navbar-nav">
<li class="active"><a href="#" class="custom-menu-item">Home <span class="sr-only">(current)</span></a></li>
<li class="dropdown">
<a class="dropdown-toggle custom-menu-item" data-toggle="dropdown" id="about-us-menu" href="#" role="button" aria-haspopup="true" aria-expanded="false">About Us <span class="caret"></span></a>
<ul class="dropdown-menu" role="menu" aria-labelledby="about-us-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>
<li class="dropdown ">
<a class="dropdown-toggle custom-menu-item" data-toggle="dropdown" id="admin-info-menu" href="#" role="button" aria-haspopup="true" aria-expanded="false">Administration <span class="caret"></span></a>
<ul class="dropdown-menu" role="menu" aria-labelledby="admin-info-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>
</div>
</nav>
</body>
</html>关于css - 如何减少 Bootstrap 导航栏中元素之间的空间，而不直接更改 bootstrap.css 中 .nav >li > a 中的填充？，我们在Stack Overflow上找到一个类似的问题： https://stackoverflow.com/questions/45336681/