Question

品牌一直居中，直到我将其改为img。

我已尝试过许多不同的方法在css中修复它，但它无法正常工作。

如何垂直对齐此徽标？为什么我的CSS不起作用？出于某种原因，并非所有的CSS样式都被应用。

<!DOCTYPE html>
<html>
<head>

<title>Stuff</title>
<link rel="stylesheet" href="https://maxcdn.bootstrapcdn.com/bootstrap/3.3.7/css/bootstrap.min.css" integrity="sha384-BVYiiSIFeK1dGmJRAkycuHAHRg32OmUcww7on3RYdg4Va+PmSTsz/K68vbdEjh4u" crossorigin="anonymous">
<link rel="stylesheet" type="text/css" href="app.css" >

</head>

<body>

<nav class="navbar navbar-default">


<div class="container-fluid">
<div class="navbar-header">
<a class="navbar-brand" href="index.html">
<img id="logo" alt="Brand" src="images/logo.jpg" width="40px" height="40px">
</a>
</div>
<div>


<div class="container" id="mynav">
    <!-- 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>

    <!-- 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">
        <li class="active"><a href="#">Link <span class="sr-only">(current)</span></a></li>
        <li><a href="#">Home</a></li>

      </ul>

      <ul class="nav navbar-nav navbar-right">
        <li><a href="#">Login</a></li>

      </ul>
    </div><!-- /.navbar-collapse -->
  </div><!-- /.container-fluid -->
</nav>

</body>

</html>

的CSS：

#mynav
{
    width: 80%;
}

#logo
{
    width:50px;
    height: 50px;
    vertical-align: middle;
}

Answer 1

您应该只需要一个.navbar-header div，只需将.navbar-brand放入standard .navbar-header并调整.navbar-brand class.的填充

.navbar .navbar-brand {
  padding-top: 5px;
}

工作示例：

＆＃13;

.navbar .navbar-brand {
  padding-top: 5px;
}
.navbar .navbar-brand img {
  height: 40px;
  width: 40px;
}

＆＃13;

<link href="https://maxcdn.bootstrapcdn.com/bootstrap/3.3.7/css/bootstrap.min.css" rel="stylesheet" />

<nav class="navbar navbar-default">
  <div class="container-fluid">

    <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>

      <a class="navbar-brand" href="#">
        <img alt="Brand" src="https://unsplash.it/40/40/?random">
      </a>

    </div>

    <div class="collapse navbar-collapse" id="bs-example-navbar-collapse-1">

      <ul class="nav navbar-nav">
        <li class="active"><a href="#">Link <span class="sr-only">(current)</span></a>
        </li>
        <li><a href="#">Home</a>
        </li>
      </ul>

      <ul class="nav navbar-nav navbar-right">
        <li><a href="#">Login</a>
        </li>
      </ul>

    </div>

  </div>
</nav>

<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>

＆＃13;

如何垂直对齐bootstrap导航栏品牌？

1 个答案: