降低引导3.0导航栏的高度

Question

我试图降低bootstrap 3.0导航栏的高度，该高度用于固定顶部行为。这里我使用的是代码。

HTML

<div class="tnav">
<div class="navbar navbar-fixed-top" role="banner">
    <div class="navbar-inner-sm">
  <div class="container">
    <div class="navbar-header">
      <button class="navbar-toggle" type="button" data-toggle="collapse" data-target=".bs-navbar-collapse">
        <span class="sr-only">Toggle navigation</span>
        <span class="icon-bar"></span>
        <span class="icon-bar"></span>
        <span class="icon-bar"></span>
      </button>
    </div>
    <nav class="collapse navbar-collapse" role="navigation">
      <ul class="nav navbar-nav pull-right">
        <li class="active">
          <a href="../getting-started">Getting started</a>
        </li>
        <li>
          <a href="../css">Ext01</a>
        </li>
        <li>
          <a href="../components">Language</a>
        </li>
        <li>
          <a href="../javascript">My Account</a>
        </li>
        <li>
          <a href="../customize">Sign Out</a>
        </li>
      </ul>
    </nav>
  </div>
    </div>
</div>

CSS

.tnav .navbar { background:#F06; height:30px; }
.navbar-inner-sm{background-color: #282828;padding: 1px 20px;background-repeat: repeat-x;-webkit-box-shadow: 0 1px 3px rgba(0, 0, 0, .25), inset 0 -1px 0 rgba(0, 0, 0, .1);-moz-box-shadow: 0 1px 3px rgba(0, 0, 0, .25), inset 0 -1px 0 rgba(0, 0, 0, .1);box-shadow: 0 1px 3px rgba(0, 0, 0, .25), inset 0 -1px 0 rgba(0, 0, 0, .1);background-image: linear-gradient(top, #333333, #222222);}
.navbar-inner-sm .nav {position: relative;left: 0;display: block;float: left;margin: 0 10px 0 0;}
.navbar-inner-sm .nav.pull-right {float: right;}
.navbar-inner-sm .nav > li {display: block;float: left;}
.navbar-inner-sm .nav > li > a {float: none;padding: 4px 5px;line-height: 19px;color: #999999;text-decoration: none;text-shadow: 0 -1px 0 rgba(0, 0, 0, 0.25);}
.navbar-inner-sm .nav > li > a:hover {background-color: transparent;color: #ffffff;text-decoration: none;}
.navbar-inner-sm .nav .active > a,.navbar .nav .active > a:hover {color: #ffffff;text-decoration: none;background-color: #003753;}
.navbar-inner-sm .divider-vertical {height: 27px;width: 1px;margin: 0 9px;overflow: hidden;background-color: #282828;border-left: 1px solid #3f3f3f; border-right: 1px solid #161616;}
.navbar-inner-sm .nav.pull-right {margin-left: 10px;margin-right: 0;}

后果

从屏幕上看，导航条的输出减少了，但高度并没有减少。原始高度以粉红色显示。

上面的css脚本在bootstrap 2中几乎可以正常工作*

有没有办法适当降低高度。

Answer 1

只需像这样覆盖. navbar中设置的最小高度：

.navbar{
  min-height:20px; //* or whatever height you require
}

将元素高度更改为小于最小高度不会有什么不同...

Answer 2

工作解决方案：

Bootstrap 3.0默认在顶部和底部有15px的填充，所以我们只需要覆盖它！

例如：

.navbar-nav > li > a {padding-top:10px !important; padding-bottom:10px !important;}
.navbar {min-height:40px !important}

Answer 3

在花了几个小时之后，添加下面的css类修复了我的问题。

使用Bootstrap 3.0工作。**

.tnav .navbar .container { height: 28px; }

使用Bootstrap 3.3.4工作

.navbar-nav > li > a, .navbar-brand {
    padding-top:4px !important; 
    padding-bottom:0 !important;
    height: 28px;
}
.navbar {min-height:28px !important;}

使用屏幕截图更新完整代码以自定义和降低导航栏的高度。

CSS:

/* navbar */
.navbar-primary .navbar { background:#9f58b5; border-bottom:none; }
.navbar-primary .navbar .nav > li > a {color: #501762;}
.navbar-primary .navbar .nav > li > a:hover {color: #fff; background-color: #8e49a3;}
.navbar-primary .navbar .nav .active > a,.navbar .nav .active > a:hover {color: #fff; background-color: #501762;}
.navbar-primary .navbar .nav li > a .caret, .tnav .navbar .nav li > a:hover .caret {border-top-color: #fff;border-bottom-color: #fff;}
.navbar-primary .navbar .nav > li.dropdown.open.active > a:hover {}
.navbar-primary .navbar .nav > li.dropdown.open > a {color: #fff;background-color: #9f58b5;border-color: #fff;}
.navbar-primary .navbar .nav > li.dropdown.open.active > a:hover .caret, .tnav .navbar .nav > li.dropdown.open > a .caret {border-top-color: #fff;}
.navbar-primary .navbar .navbar-brand {color:#fff;}
.navbar-primary .navbar .nav.pull-right {margin-left: 10px; margin-right: 0;}
.navbar-xs .navbar-primary .navbar { min-height:28px; height: 28px; }
.navbar-xs .navbar-primary .navbar .navbar-brand{ padding: 0px 12px;font-size: 16px;line-height: 28px; }
.navbar-xs .navbar-primary .navbar .navbar-nav > li > a {  padding-top: 0px; padding-bottom: 0px; line-height: 28px; }
.navbar-sm .navbar-primary .navbar { min-height:40px; height: 40px; }
.navbar-sm .navbar-primary .navbar .navbar-brand{ padding: 0px 12px;font-size: 16px;line-height: 40px; }
.navbar-sm .navbar-primary .navbar .navbar-nav > li > a {  padding-top: 0px; padding-bottom: 0px; line-height: 40px; }

使用代码：

<div class="navbar-xs">
   <div class="navbar-primary">
       <nav class="navbar navbar-static-top" role="navigation">
          <!-- Brand and toggle get grouped for better mobile display -->
          <div class="navbar-header">
              <button type="button" class="navbar-toggle" data-toggle="collapse" data-target="#bs-example-navbar-collapse-8">
                 <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="#">Brand</a>
          </div>
          <!-- Collect the nav links, forms, and other content for toggling -->
          <div class="collapse navbar-collapse" id="bs-example-navbar-collapse-8">
              <ul class="nav navbar-nav">
                  <li class="active"><a href="#">Home</a></li>
                  <li><a href="#">Link</a></li>
                   <li><a href="#">Link</a></li>
              </ul>
          </div><!-- /.navbar-collapse -->
      </nav>
  </div>
</div>