我的侧边菜单需要在手机屏幕较小时将其转换为汉堡菜单。
我认为<div class="collapse navbar-collapse" id="navbarSupportedContent">之间的所有内容都进入了汉堡包。
<!Doctype html>
<html lang="en">
<head>
<!-- Required meta tags -->
<meta charset="utf-8">
<meta name="viewport" content="width=device-width, initial-scale=1, shrink-to-fit=no">
<!-- Bootstrap CSS -->
<link rel="stylesheet" href="https://stackpath.bootstrapcdn.com/bootstrap/4.3.1/css/bootstrap.min.css" integrity="sha384-ggOyR0iXCbMQv3Xipma34MD+dH/1fQ784/j6cY/iJTQUOhcWr7x9JvoRxT2MZw1T" crossorigin="anonymous">
<title>Admin</title>
</head>
<body>
<nav class="navbar navbar-expand-lg navbar-dark bg-dark">
<a class="navbar-brand" href="#">ADMIN PANEL</a>
<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">
<!-- code here will be displayed in hamburger -->
</div>
</nav>
<div class="container-fluid">
<div class="row">
<div class="col-3 ">
<ul class="list-group bg-primary ">
<li class="list-unstyled border-0 p-2"> <a href="" class="text-dark"><i class="fa fa-chevron-right"> </i> Product 1 </a></li>
<li class="list-unstyled border-0 p-2"> <a href="" class="text-dark"><i class="fa fa-chevron-right"> </i> Product 2 </a></li>
<li class="list-unstyled border-0 p-2"> <a href="" class="text-dark"><i class="fa fa-chevron-right"> </i> Product 3 </a></li>
<li class="list-unstyled border-0 p-2"> <a href="" class="text-dark"><i class="fa fa-chevron-right"> </i> Product 4 </a></li>
<li class="list-unstyled border-0 p-2"> <a href="" class="text-dark"><i class="fa fa-chevron-right"> </i> Product 5 </a></li>
<li class="list-unstyled border-0 p-2"> <a href="" class="text-dark"><i class="fa fa-chevron-right"> </i> Product 6 </a></li>
<li class="list-unstyled border-0 p-2"> <a href="" class="text-dark"><i class="fa fa-chevron-right"> </i> Product 7 </a></li>
</ul>
</div>
<div class="col-9">
My Content
</div>
</div>
</div>
<!-- Optional JavaScript -->
<!-- jQuery first, then Popper.js, then Bootstrap JS -->
<script src="https://code.jquery.com/jquery-3.3.1.slim.min.js" integrity="sha384-q8i/X+965DzO0rT7abK41JStQIAqVgRVzpbzo5smXKp4YfRvH+8abtTE1Pi6jizo" crossorigin="anonymous"></script>
<script src="https://cdnjs.cloudflare.com/ajax/libs/popper.js/1.14.7/umd/popper.min.js" integrity="sha384-UO2eT0CpHqdSJQ6hJty5KVphtPhzWj9WO1clHTMGa3JDZwrnQq4sF86dIHNDz0W1" crossorigin="anonymous"></script>
<script src="https://stackpath.bootstrapcdn.com/bootstrap/4.3.1/js/bootstrap.min.js" integrity="sha384-JjSmVgyd0p3pXB1rRibZUAYoIIy6OrQ6VrjIEaFf/nJGzIxFDsf4x0xIM+B07jRM" crossorigin="anonymous"></script>
</body>
</html>
答案 0 :(得分：4)
您可以使用引导程序utility display classes
这是解决您问题的方法。
<!Doctype html>
<html lang="en">
<head>
<!-- Required meta tags -->
<meta charset="utf-8">
<meta name="viewport" content="width=device-width, initial-scale=1, shrink-to-fit=no">
<!-- Bootstrap CSS -->
<link rel="stylesheet" href="https://stackpath.bootstrapcdn.com/bootstrap/4.3.1/css/bootstrap.min.css" integrity="sha384-ggOyR0iXCbMQv3Xipma34MD+dH/1fQ784/j6cY/iJTQUOhcWr7x9JvoRxT2MZw1T" crossorigin="anonymous">
<title>Admin</title>
</head>
<body>
<nav class="navbar navbar-expand-sm navbar-dark bg-dark">
<a class="navbar-brand" href="#">ADMIN PANEL</a>
<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="list-group bg-primary d-block d-sm-none">
<li class="list-unstyled border-0 p-2"> <a href="" class="text-dark"><i class="fa fa-chevron-right"> </i> Product 1 </a></li>
<li class="list-unstyled border-0 p-2"> <a href="" class="text-dark"><i class="fa fa-chevron-right"> </i> Product 2 </a></li>
<li class="list-unstyled border-0 p-2"> <a href="" class="text-dark"><i class="fa fa-chevron-right"> </i> Product 3 </a></li>
<li class="list-unstyled border-0 p-2"> <a href="" class="text-dark"><i class="fa fa-chevron-right"> </i> Product 4 </a></li>
<li class="list-unstyled border-0 p-2"> <a href="" class="text-dark"><i class="fa fa-chevron-right"> </i> Product 5 </a></li>
<li class="list-unstyled border-0 p-2"> <a href="" class="text-dark"><i class="fa fa-chevron-right"> </i> Product 6 </a></li>
<li class="list-unstyled border-0 p-2"> <a href="" class="text-dark"><i class="fa fa-chevron-right"> </i> Product 7 </a></li>
</ul>
</div>
</nav>
<div class="container-fluid">
<div class="row">
<div class="col-3 d-none d-sm-block">
<ul class="list-group bg-primary ">
<li class="list-unstyled border-0 p-2"> <a href="" class="text-dark"><i class="fa fa-chevron-right"> </i> Product 1 </a></li>
<li class="list-unstyled border-0 p-2"> <a href="" class="text-dark"><i class="fa fa-chevron-right"> </i> Product 2 </a></li>
<li class="list-unstyled border-0 p-2"> <a href="" class="text-dark"><i class="fa fa-chevron-right"> </i> Product 3 </a></li>
<li class="list-unstyled border-0 p-2"> <a href="" class="text-dark"><i class="fa fa-chevron-right"> </i> Product 4 </a></li>
<li class="list-unstyled border-0 p-2"> <a href="" class="text-dark"><i class="fa fa-chevron-right"> </i> Product 5 </a></li>
<li class="list-unstyled border-0 p-2"> <a href="" class="text-dark"><i class="fa fa-chevron-right"> </i> Product 6 </a></li>
<li class="list-unstyled border-0 p-2"> <a href="" class="text-dark"><i class="fa fa-chevron-right"> </i> Product 7 </a></li>
</ul>
</div>
<div class="col-9">
My Content
</div>
</div>
</div>
<!-- Optional JavaScript -->
<!-- jQuery first, then Popper.js, then Bootstrap JS -->
<script src="https://code.jquery.com/jquery-3.3.1.slim.min.js" integrity="sha384-q8i/X+965DzO0rT7abK41JStQIAqVgRVzpbzo5smXKp4YfRvH+8abtTE1Pi6jizo" crossorigin="anonymous"></script>
<script src="https://cdnjs.cloudflare.com/ajax/libs/popper.js/1.14.7/umd/popper.min.js" integrity="sha384-UO2eT0CpHqdSJQ6hJty5KVphtPhzWj9WO1clHTMGa3JDZwrnQq4sF86dIHNDz0W1" crossorigin="anonymous"></script>
<script src="https://stackpath.bootstrapcdn.com/bootstrap/4.3.1/js/bootstrap.min.js" integrity="sha384-JjSmVgyd0p3pXB1rRibZUAYoIIy6OrQ6VrjIEaFf/nJGzIxFDsf4x0xIM+B07jRM" crossorigin="anonymous"></script>
</body>
</html>
答案 1 :(得分：0)
基于Gergana的解决方案，我进一步对其进行了改进。
现在左侧栏是全屏显示，没有填充，布局也有所改进。
也请投票给Gergana解决方案，因为她为此奠定了里程碑。
<!Doctype html>
<html lang="en">
<head>
<!-- Required meta tags -->
<meta charset="utf-8">
<meta name="viewport" content="width=device-width, initial-scale=1, shrink-to-fit=no">
<!-- Bootstrap CSS -->
<link rel="stylesheet" href="https://stackpath.bootstrapcdn.com/bootstrap/4.3.1/css/bootstrap.min.css" integrity="sha384-ggOyR0iXCbMQv3Xipma34MD+dH/1fQ784/j6cY/iJTQUOhcWr7x9JvoRxT2MZw1T" crossorigin="anonymous">
<link rel="stylesheet" href="https://cdnjs.cloudflare.com/ajax/libs/font-awesome/4.7.0/css/font-awesome.min.css">
<title>Admin</title>
</head>
<body>
<div class="container-fluid">
<div class="row">
<div class="col-3 d-none d-sm-block p-0 bg-secondary p-3 min-vh-100">
<h4 class="gray-3">Right bar</h4>
<ul class="list-group mt-4">
<li class="list-unstyled border-0 p-2"> <a href="" class="text-light">Product 1 </a></li>
<li class="list-unstyled border-0 p-2"> <a href="" class="text-light">Product 2 </a></li>
<li class="list-unstyled border-0 p-2"> <a href="" class="text-light">Product 3 </a></li>
<li class="list-unstyled border-0 p-2"> <a href="" class="text-light">Product 4 </a></li>
<li class="list-unstyled border-0 p-2"> <a href="" class="text-light">Product 5 </a></li>
<li class="list-unstyled border-0 p-2"> <a href="" class="text-light">Product 6 </a></li>
<li class="list-unstyled border-0 p-2"> <a href="" class="text-light">Product 7 </a></li>
</ul>
</div>
<div class="col-12 col-sm-9 p-0">
<nav class="navbar navbar-expand-sm navbar-dark bg-dark">
<a class="navbar-brand" href="#">ADMIN PANEL</a>
<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="list-group bg-primary d-block d-sm-none">
<li class="list-unstyled border-0 p-2"> <a href="" class="text-dark"><i class="fa fa-chevron-right"> </i> Product 1 </a></li>
<li class="list-unstyled border-0 p-2"> <a href="" class="text-dark"><i class="fa fa-chevron-right"> </i> Product 2 </a></li>
<li class="list-unstyled border-0 p-2"> <a href="" class="text-dark"><i class="fa fa-chevron-right"> </i> Product 3 </a></li>
<li class="list-unstyled border-0 p-2"> <a href="" class="text-dark"><i class="fa fa-chevron-right"> </i> Product 4 </a></li>
<li class="list-unstyled border-0 p-2"> <a href="" class="text-dark"><i class="fa fa-chevron-right"> </i> Product 5 </a></li>
<li class="list-unstyled border-0 p-2"> <a href="" class="text-dark"><i class="fa fa-chevron-right"> </i> Product 6 </a></li>
<li class="list-unstyled border-0 p-2"> <a href="" class="text-dark"><i class="fa fa-chevron-right"> </i> Product 7 </a></li>
</ul>
</div>
</nav>
<main class="p-4">
My Content
</main>
</div>
</div>
</div>
<!-- Optional JavaScript -->
<!-- jQuery first, then Popper.js, then Bootstrap JS -->
<script src="https://code.jquery.com/jquery-3.3.1.slim.min.js" integrity="sha384-q8i/X+965DzO0rT7abK41JStQIAqVgRVzpbzo5smXKp4YfRvH+8abtTE1Pi6jizo" crossorigin="anonymous"></script>
<script src="https://cdnjs.cloudflare.com/ajax/libs/popper.js/1.14.7/umd/popper.min.js" integrity="sha384-UO2eT0CpHqdSJQ6hJty5KVphtPhzWj9WO1clHTMGa3JDZwrnQq4sF86dIHNDz0W1" crossorigin="anonymous"></script>
<script src="https://stackpath.bootstrapcdn.com/bootstrap/4.3.1/js/bootstrap.min.js" integrity="sha384-JjSmVgyd0p3pXB1rRibZUAYoIIy6OrQ6VrjIEaFf/nJGzIxFDsf4x0xIM+B07jRM" crossorigin="anonymous"></script>
</body>
</html>