Question

我的导航栏正在折叠但没有扩展。在我决定将徽标居中并向右和向左移动一些导航项目之前，这一切都完美无缺。

我试过在w3学校建立页面，这个例子以徽标为中心 - http://www.bootply.com/mQh8DyRfWY

我已经搜索了解决方案，但我遇到的所有问题都是因为标记不正确。我看不出哪里出错了。我也是新手。

   <!DOCTYPE html>
   <html lang="en">
    <head>
    <title>Rigare</title>
    <meta charset="utf-8">
    <meta http-equiv="X-UA-Compatible" content="IE=edge">
    <meta name="viewport" content="width=device-width, initial-scale=1">
   <link href="styles.css" type="text/css" rel="stylesheet" />
    <!-- jQuery -->
    <script src="https://ajax.googleapis.com/ajax/libs/jquery/1.11.3/jquery.min.js"></script>
    <!-- JavaScript -->
    <script src="https://maxcdn.bootstrapcdn.com/bootstrap/3.3.5/js/bootstrap.min.js"></script>
    <!-- Bootstrap -->
    <link href="https://maxcdn.bootstrapcdn.com/bootstrap/3.3.5/css/bootstrap.min.css" rel="stylesheet">
</head>
<body>

<div class="container-fluid" style="height:200px;">
</div>

<!-- Navbar -->
<nav class="navbar navbar-default" role="navigation" data-spy="affix" data-offset-top="197">
  <div class="container-fluid">

    <div class="navbar-header">
      <button type="button" class="navbar-toggle" data-toggle="collapse" data-target="#myNavbar">  
        <span class="icon-bar"></span>
        <span class="icon-bar"></span>
        <span class="icon-bar"></span>
      </button>
    </div>  

    <a class="navbar-brand" href="#">Rigare</a>

    <div class="collapse navbar-collapse" id="myNavbar">

        <ul class="nav navbar-nav" "navbar-left">
           <li><a href="#">Technical Capabilities</a></li>
           <li><a href="#">Staff and Associates</a></li>
        </ul>
        <ul class="nav navbar-nav navbar-right">
            <li><a href="#">Courses</a></li>
            <li><a href="#">Products and Hire</a></li>
            <li><a href="#">Contact</a></li>
        </ul>

    </div>
  </div>
</nav><!-- Navbar End -->

<div class="container-fluid" style="height:1000px">
    <h1>Some text to enable scrolling</h1>
    <h1>Some text to enable scrolling</h1>
    <h1>Some text to enable scrolling</h1>
    <h1>Some text to enable scrolling</h1>
    <h1>Some text to enable scrolling</h1>
    <h1>Some text to enable scrolling</h1>
    <h1>Some text to enable scrolling</h1>
    <h1>Some text to enable scrolling</h1>
    <h1>Some text to enable scrolling</h1>
    <h1>Some text to enable scrolling</h1>
    <h1>Some text to enable scrolling</h1>
    <h1>Some text to enable scrolling</h1>
    <h1>Some text to enable scrolling</h1>
    <h1>Some text to enable scrolling</h1>
    <h1>Some text to enable scrolling</h1>
    <h1>Some text to enable scrolling</h1>
    <h1>Some text to enable scrolling</h1>
    <h1>Some text to enable scrolling</h1>
    <h1>Some text to enable scrolling</h1>
    <h1>Some text to enable scrolling</h1>
    <h1>Some text to enable scrolling</h1>
    <h1>Some text to enable scrolling</h1>
</div>


</body>

这是我的CSS

  .affix {
  top: 0;
  width: 100%;}

  .affix + .container-fluid {
  padding-top: 70px;}

  .navbar-brand {
  position: absolute;
  width: 100%;
  left: 0;
  top: 0;
  text-align: center;
  margin: auto;}

Answer 1

您应用于navbar-brand居中的CSS实际上覆盖了toggle按钮。见工作示例。

＆＃13;

$('#nav').affix({
  offset: {
    top: $('header').height()
  }
});

＆＃13;

header {
  height: 200px;
}
div#nav.affix {
  position: fixed;
  top: 0;
  width: 100%;
  z-index: 10;
}
.navbar-brand.navbar-brand-centered {
  position: absolute;
  left: 50%;
  display: block;
  width: 160px;
  text-align: center;
}
.navbar > .container .navbar-brand.navbar-brand-centered,
.navbar > .container-fluid .navbar-brand.navbar-brand-centered {
  margin-left: -80px;
}

＆＃13;

<script src="https://ajax.googleapis.com/ajax/libs/jquery/1.11.1/jquery.min.js"></script>
<script src="https://maxcdn.bootstrapcdn.com/bootstrap/3.3.5/js/bootstrap.min.js"></script>
<link href="https://maxcdn.bootstrapcdn.com/bootstrap/3.3.5/css/bootstrap.min.css" rel="stylesheet" />
<header class="masthead">
  <div class="container">
    <div class="row">
      <div class="col-sm-12">
        <h1>Bootstrap 3 Affix</h1>

      </div>
    </div>
  </div>
</header>
<!-- Begin Navbar -->
<div id="nav">
  <nav class="navbar navbar-default navbar-static-top">
    <div class="container-fluid">
      <!-- Brand and toggle get grouped for better mobile display -->
      <div class="navbar-header">
        <button type="button" class="navbar-toggle collapsed" data-toggle="collapse" data-target="#bs-example-navbar-collapse-1" 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 class="navbar-brand navbar-brand-centered">Rigare</div>
      </div>
      <!-- Collect the nav links, forms, and other content for toggling -->
      <div class="collapse navbar-collapse" id="bs-example-navbar-collapse-1">
        <ul class="nav navbar-nav" "navbar-left">
          <li><a href="#">Technical Capabilities</a>

          </li>
          <li><a href="#">Staff and Associates</a>

          </li>
        </ul>
        <ul class="nav navbar-nav navbar-right">
          <li><a href="#">Courses</a>

          </li>
          <li><a href="#">Products and Hire</a>

          </li>
          <li><a href="#">Contact</a>

          </li>
        </ul>
        </li>
        </ul>
      </div>
      <!-- /.navbar-collapse -->
    </div>
    <!-- /.container-fluid -->
  </nav>
</div>
<!-- Begin Body -->
<div class="container">
  <p>Lorem Ipsum is simply dummy text of the printing and typesetting industry. Lorem Ipsum has been the industry's standard dummy text ever since the 1500s, when an unknown printer took a galley of type and scrambled it to make a type specimen book. It
    has survived not only five centuries, but also the leap into electronic typesetting, remaining essentially unchanged. It was popularised in the 1960s with the release of Letraset sheets containing Lorem Ipsum passages, and more recently with desktop
    publishing software like Aldus PageMaker including versions of Lorem Ipsum.</p>
  <p>Lorem Ipsum is simply dummy text of the printing and typesetting industry. Lorem Ipsum has been the industry's standard dummy text ever since the 1500s, when an unknown printer took a galley of type and scrambled it to make a type specimen book. It
    has survived not only five centuries, but also the leap into electronic typesetting, remaining essentially unchanged. It was popularised in the 1960s with the release of Letraset sheets containing Lorem Ipsum passages, and more recently with desktop
    publishing software like Aldus PageMaker including versions of Lorem Ipsum.</p>
  <p>Lorem Ipsum is simply dummy text of the printing and typesetting industry. Lorem Ipsum has been the industry's standard dummy text ever since the 1500s, when an unknown printer took a galley of type and scrambled it to make a type specimen book. It
    has survived not only five centuries, but also the leap into electronic typesetting, remaining essentially unchanged. It was popularised in the 1960s with the release of Letraset sheets containing Lorem Ipsum passages, and more recently with desktop
    publishing software like Aldus PageMaker including versions of Lorem Ipsum.</p>
  <p>Lorem Ipsum is simply dummy text of the printing and typesetting industry. Lorem Ipsum has been the industry's standard dummy text ever since the 1500s, when an unknown printer took a galley of type and scrambled it to make a type specimen book. It
    has survived not only five centuries, but also the leap into electronic typesetting, remaining essentially unchanged. It was popularised in the 1960s with the release of Letraset sheets containing Lorem Ipsum passages, and more recently with desktop
    publishing software like Aldus PageMaker including versions of Lorem Ipsum.</p>
  <p>Lorem Ipsum is simply dummy text of the printing and typesetting industry. Lorem Ipsum has been the industry's standard dummy text ever since the 1500s, when an unknown printer took a galley of type and scrambled it to make a type specimen book. It
    has survived not only five centuries, but also the leap into electronic typesetting, remaining essentially unchanged. It was popularised in the 1960s with the release of Letraset sheets containing Lorem Ipsum passages, and more recently with desktop
    publishing software like Aldus PageMaker including versions of Lorem Ipsum.</p>
  <p>Lorem Ipsum is simply dummy text of the printing and typesetting industry. Lorem Ipsum has been the industry's standard dummy text ever since the 1500s, when an unknown printer took a galley of type and scrambled it to make a type specimen book. It
    has survived not only five centuries, but also the leap into electronic typesetting, remaining essentially unchanged. It was popularised in the 1960s with the release of Letraset sheets containing Lorem Ipsum passages, and more recently with desktop
    publishing software like Aldus PageMaker including versions of Lorem Ipsum.</p>
  <p>Lorem Ipsum is simply dummy text of the printing and typesetting industry. Lorem Ipsum has been the industry's standard dummy text ever since the 1500s, when an unknown printer took a galley of type and scrambled it to make a type specimen book. It
    has survived not only five centuries, but also the leap into electronic typesetting, remaining essentially unchanged. It was popularised in the 1960s with the release of Letraset sheets containing Lorem Ipsum passages, and more recently with desktop
    publishing software like Aldus PageMaker including versions of Lorem Ipsum.</p>
  <p>Lorem Ipsum is simply dummy text of the printing and typesetting industry. Lorem Ipsum has been the industry's standard dummy text ever since the 1500s, when an unknown printer took a galley of type and scrambled it to make a type specimen book. It
    has survived not only five centuries, but also the leap into electronic typesetting, remaining essentially unchanged. It was popularised in the 1960s with the release of Letraset sheets containing Lorem Ipsum passages, and more recently with desktop
    publishing software like Aldus PageMaker including versions of Lorem Ipsum.</p>
  <p>Lorem Ipsum is simply dummy text of the printing and typesetting industry. Lorem Ipsum has been the industry's standard dummy text ever since the 1500s, when an unknown printer took a galley of type and scrambled it to make a type specimen book. It
    has survived not only five centuries, but also the leap into electronic typesetting, remaining essentially unchanged. It was popularised in the 1960s with the release of Letraset sheets containing Lorem Ipsum passages, and more recently with desktop
    publishing software like Aldus PageMaker including versions of Lorem Ipsum.</p>
  <p>Lorem Ipsum is simply dummy text of the printing and typesetting industry. Lorem Ipsum has been the industry's standard dummy text ever since the 1500s, when an unknown printer took a galley of type and scrambled it to make a type specimen book. It
    has survived not only five centuries, but also the leap into electronic typesetting, remaining essentially unchanged. It was popularised in the 1960s with the release of Letraset sheets containing Lorem Ipsum passages, and more recently with desktop
    publishing software like Aldus PageMaker including versions of Lorem Ipsum.</p>
  <p>Lorem Ipsum is simply dummy text of the printing and typesetting industry. Lorem Ipsum has been the industry's standard dummy text ever since the 1500s, when an unknown printer took a galley of type and scrambled it to make a type specimen book. It
    has survived not only five centuries, but also the leap into electronic typesetting, remaining essentially unchanged. It was popularised in the 1960s with the release of Letraset sheets containing Lorem Ipsum passages, and more recently with desktop
    publishing software like Aldus PageMaker including versions of Lorem Ipsum.</p>
  <p>Lorem Ipsum is simply dummy text of the printing and typesetting industry. Lorem Ipsum has been the industry's standard dummy text ever since the 1500s, when an unknown printer took a galley of type and scrambled it to make a type specimen book. It
    has survived not only five centuries, but also the leap into electronic typesetting, remaining essentially unchanged. It was popularised in the 1960s with the release of Letraset sheets containing Lorem Ipsum passages, and more recently with desktop
    publishing software like Aldus PageMaker including versions of Lorem Ipsum.</p>
  <p>Lorem Ipsum is simply dummy text of the printing and typesetting industry. Lorem Ipsum has been the industry's standard dummy text ever since the 1500s, when an unknown printer took a galley of type and scrambled it to make a type specimen book. It
    has survived not only five centuries, but also the leap into electronic typesetting, remaining essentially unchanged. It was popularised in the 1960s with the release of Letraset sheets containing Lorem Ipsum passages, and more recently with desktop
    publishing software like Aldus PageMaker including versions of Lorem Ipsum.</p>
  <p>Lorem Ipsum is simply dummy text of the printing and typesetting industry. Lorem Ipsum has been the industry's standard dummy text ever since the 1500s, when an unknown printer took a galley of type and scrambled it to make a type specimen book. It
    has survived not only five centuries, but also the leap into electronic typesetting, remaining essentially unchanged. It was popularised in the 1960s with the release of Letraset sheets containing Lorem Ipsum passages, and more recently with desktop
    publishing software like Aldus PageMaker including versions of Lorem Ipsum.</p>
</div>

＆＃13;

崩溃后Bootstrap导航栏不会展开

1 个答案: