引导: navbar-colapse div进入navbar

Question

这是我的问题：塌陷问题

你可以看到我的肚脐塌陷div进入肚脐区域。你能帮我修一下吗？

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<script src="https://ajax.googleapis.com/ajax/libs/jquery/2.1.1/jquery.min.js"></script>
<script src="https://maxcdn.bootstrapcdn.com/bootstrap/3.3.7/js/bootstrap.min.js"></script>
<link href="https://maxcdn.bootstrapcdn.com/bootstrap/3.3.7/css/bootstrap.min.css" rel="stylesheet"/>
<nav class="navbar navbar-default navbar-fixed-top">
    <div class="container">
        <a class="navbar-brand" href="#page-top">Title</a>
        <button class="navbar-toggle" data-toggle="collapse" data-target="#dropdown">
            Menu
        </button>
        <div class="collapse navbar-collapse" id="dropdown">
            <ul class="nav navbar-nav navbar-right">
                <li>
                    <a href="#">Link 1</a>
                </li>
                <li>
                    <a href="#">Link 2</a>
                </li>
                <li>
                    <a href="#">Link 3</a>
                </li>
            </ul>
        </div>
    </div>
</nav>

​

Answer 1

问题是您错过了添加navbar-header容器，这有助于分隔标题和子菜单。希望它能帮上忙

​

<script src="https://ajax.googleapis.com/ajax/libs/jquery/2.1.1/jquery.min.js"></script>
<script src="https://maxcdn.bootstrapcdn.com/bootstrap/3.3.7/js/bootstrap.min.js"></script>
<link href="https://maxcdn.bootstrapcdn.com/bootstrap/3.3.7/css/bootstrap.min.css" rel="stylesheet" />
<nav class="navbar navbar-default navbar-fixed-top">
  <div class="container">
    <div class="navbar-header">
      <a class="navbar-brand" href="#page-top">Title</a>
      <button class="navbar-toggle" data-toggle="collapse" data-target="#dropdown">
                Menu
            </button></div>
    <div class="collapse navbar-collapse" id="dropdown">
      <ul class="nav navbar-nav navbar-right">
        <li>
          <a href="#">Link 1</a>
        </li>
        <li>
          <a href="#">Link 2</a>
        </li>
        <li>
          <a href="#">Link 3</a>
        </li>
      </ul>
    </div>
  </div>
</nav>

​

Answer 2

在div id=“下拉”中添加.m-top-55类，用于小布局。

@media only screen and (min-width: 600px) {
    /* For tablets: */
    .m-top-55{
       margin-top:55px;
     }
}

这会解决你的问题。