我已经下载了带有垂直标签的引导程序模板，并且看起来像是一个主框架。
screenshot of current web page view
我希望能够点击“ Google ”（左侧的链接），并使google页面出现在主框架中，即当前显示为“这是我要显示页面”
当前，当我单击“ Google”时，会分别在其自己的页面中显示google。
这显然是与我想要的内容相关的行，我尝试添加各种html添加内容，但无济于事。
<a href="https://www.google.com" class="list-group-item list-group-item-action bg-light">Google</a>
我知道我可以在页面本身中包含内容并以各种方式链接到该内容（例如使用div和容器），但是我需要这样做，因为所有链接都将是单个网站或页面，并且在每种情况下，我都需要在中间框架内可以访问它们。
任何人都可以提出解决方案并提供要添加到此处的代码吗？
我的代码（索引页）
<!DOCTYPE html>
<html lang="en">
<head>
<meta charset="utf-8">
<meta name="viewport" content="width=device-width, initial-scale=1, shrink-to-fit=no">
<meta name="description" content="">
<meta name="author" content="">
<title>Vertical</title>
<!-- Bootstrap core CSS -->
<link href="vendor/bootstrap/css/bootstrap.min.css" rel="stylesheet">
<!-- Custom styles for this template -->
<link href="css/simple-sidebar.css" rel="stylesheet">
</head>
<body>
<div class="d-flex" id="wrapper">
<!-- Sidebar -->
<div class="bg-light border-right" id="sidebar-wrapper">
<div class="sidebar-heading">Start Bootstrap </div>
<div class="list-group list-group-flush">
<a href="https://www.google.com" class="list-group-item list-group-item-action bg-light">Google</a>
<a href="#" class="list-group-item list-group-item-action bg-light">Shortcuts</a>
<a href="#" class="list-group-item list-group-item-action bg-light">Overview</a>
<a href="#" class="list-group-item list-group-item-action bg-light">Events</a>
<a href="#" class="list-group-item list-group-item-action bg-light">Profile</a>
<a href="#" class="list-group-item list-group-item-action bg-light">Status</a>
</div>
</div>
<!-- /#sidebar-wrapper -->
<!-- Page Content -->
<div id="page-content-wrapper">
<nav class="navbar navbar-expand-lg navbar-light bg-light border-bottom">
<button class="btn btn-primary" id="menu-toggle">Toggle Menu</button>
<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 ml-auto mt-2 mt-lg-0">
<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 dropdown-menu-right" 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>
</ul>
</div>
</nav>
<div class="container-fluid">
<h1 class="mt-4">This is where I want pages to show</h1>
<p>e,g, when I click Google on the left, I'd like the page (or site) to show in the frame, and will appear non-collapsed on larger screens. When toggled using the button below, the menu will change.</p>
<p>Make sure to keep all page content within the <code>#page-content-wrapper</code>. The top navbar is optional, and just for demonstration. Just create an element with the <code>#menu-toggle</code> ID which will toggle the menu when clicked.</p>
</div>
</div>
<!-- /#page-content-wrapper -->
</div>
<!-- /#wrapper -->
<!-- Bootstrap core JavaScript -->
<script src="vendor/jquery/jquery.min.js"></script>
<script src="vendor/bootstrap/js/bootstrap.bundle.min.js"></script>
<!-- Menu Toggle Script -->
<script>
$("#menu-toggle").click(function(e) {
e.preventDefault();
$("#wrapper").toggleClass("toggled");
});
</script>
</body>
</html>
[1]: https://i.st
ack.imgur.com/JvcRb.png