Bootstrap固定了PC和手机之间的顶部行为

我正在比较移动设备和桌面设备中的固定顶部。我的代码位于我最初在https://getbootstrap.com/docs/4.0/examples/navbar-top-fixed/.奇怪的东西在桌面上。。固定导航条将出现在屏幕的任何部分。。在我下面的代码中，它是一个300像素的导航栏，当我水平滚动时，它就在那里。但当我在移动视图中检查时，fixed行为将不再工作。基本上，当我水平滚动时，它不会继续。它将保持原来的位置。。有没有办法让我在手机上的导航和在电脑上的导航一样？请注意，当我说移动时，我只是在Chrome和三星S5 中使用移动视图


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<meta name="viewport" content="width=device-width, initial-scale=1, shrink-to-fit=no">
<meta name="description" content="">
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<link rel="icon" href="/docs/4.0/assets/img/favicons/favicon.ico">
<title>Fixed top navbar example for Bootstrap</title>
<link rel="canonical" href="https://getbootstrap.com/docs/4.0/examples/navbar-top-fixed/">
<!-- Bootstrap core CSS -->
<link href="https://getbootstrap.com/docs/4.0/dist/css/bootstrap.min.css" rel="stylesheet">
</head>
<body>
<nav class="navbar navbar-dark fixed-top bg-dark" style="width: 320px">
<a class="navbar-brand" href="#">Fixed navbar</a>
<button class="navbar-toggler" type="button" data-toggle="collapse" data-target="#navbarCollapse" aria-controls="navbarCollapse" aria-expanded="false" aria-label="Toggle navigation">
<span class="navbar-toggler-icon"></span>
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<a class="nav-link" href="#">Link</a>
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<input class="form-control mr-sm-2" type="text" placeholder="Search" aria-label="Search">
<button class="btn btn-outline-success my-2 my-sm-0" type="submit">Search</button>
</form>
</div>
</nav>
<main role="main" class="container" style="width: 3000px; max-width: 3000px">
<div class="jumbotron">
<h1>Navbar example</h1>
<p class="lead">This example is a quick exercise to illustrate how fixed to top navbar works. As you scroll, it will remain fixed to the top of your browser's viewport.</p>
<a class="btn btn-lg btn-primary" href="../../components/navbar/" role="button">View navbar docs &raquo;</a>
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</main>
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好的，这是你的问题的解决方案，实际上在你的情况下，你的内部div远大于身体的宽度，你的整个身体都有一个滚动条，固定的位置与身体一起工作。

因此，让它在移动设备和桌面上也能工作的简单解决方案，只需像这样使用宽度项目，就不会影响的滚动器

<!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="">
<link rel="icon" href="/docs/4.0/assets/img/favicons/favicon.ico">
<title>Fixed top navbar example for Bootstrap</title>
<link rel="canonical" href="https://getbootstrap.com/docs/4.0/examples/navbar-top-fixed/">
<!-- Bootstrap core CSS -->
<link href="https://getbootstrap.com/docs/4.0/dist/css/bootstrap.min.css" rel="stylesheet">
</head>
<body>
<nav class="navbar navbar-dark fixed-top bg-dark" style="width: 320px">
<a class="navbar-brand" href="#">Fixed navbar</a>
<button class="navbar-toggler" type="button" data-toggle="collapse" data-target="#navbarCollapse" aria-controls="navbarCollapse" aria-expanded="false" aria-label="Toggle navigation">
<span class="navbar-toggler-icon"></span>
</button>
<div class="collapse navbar-collapse" id="navbarCollapse">
<ul class="navbar-nav mr-auto">
<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">
<a class="nav-link disabled" href="#">Disabled</a>
</li>
</ul>
<form class="form-inline mt-2 mt-md-0">
<input class="form-control mr-sm-2" type="text" placeholder="Search" aria-label="Search">
<button class="btn btn-outline-success my-2 my-sm-0" type="submit">Search</button>
</form>
</div>
</nav>
<main role="main" class="container" style="overflow: auto;max-width: 100%;">
<div class="jumbotron" style="width: 3000px; max-width: 3000px">
<h1>Navbar example</h1>
<p class="lead">This example is a quick exercise to illustrate how fixed to top navbar works. As you scroll, it will remain fixed to the top of your browser's viewport.</p>
<a class="btn btn-lg btn-primary" href="../../components/navbar/" role="button">View navbar docs &raquo;</a>
</div>
</main>
<!-- Bootstrap core JavaScript
================================================== -->
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<script src="https://code.jquery.com/jquery-3.2.1.slim.min.js" integrity="sha384-KJ3o2DKtIkvYIK3UENzmM7KCkRr/rE9/Qpg6aAZGJwFDMVNA/GpGFF93hXpG5KkN" crossorigin="anonymous"></script>
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全身。

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