我的导航栏显示不正确。菜单在另一个菜单上堆叠。任何人都可以帮助我排除此问题。我要附加我使用的代码以及浏览器中当前导航栏的显示
<!DOCTYPE html>
<html lang="en">
<head>
<title>New Website</title>
<meta charset="UTF-8">
<meta name="viewport" content="width=device-width,initial-scale=1">
<link rel="stylesheet" type="text/css" href="bootstrap-4.1.3/css/bootstrap.min.css">
<script src="https://ajax.googleapis.com/ajax/libs/jquery/3.3.1/jquery.min.js"></script>
<script src="bootstrap-4.1.3/js/bootstrap.min.js"></script>
</head>
<body>
<nav class="navbar navbar-default">
<div class="container-fluid">
<div class="navbar-header">
<a class="navbar-brand" href="index.html">New WebSite</a>
</div>
<ul class="nav navbar-nav">
<li><a href="#home">Home</a></li>
<li><a href="#about">About</a></li>
<li><a href="#skills">Skills</a></li>
<li><a href="#education">Education</a></li>
<li><a href="#contact">Contact</a></li>
</ul>
</div>
</nav>
</body>
</html>