在导航栏中删除css覆盖3.3.4在导航栏中消除背景颜色时无效

时间：2015-05-17 04:43:13

标签： html css twitter-bootstrap

基本上我可以通过简单地使用以下内容将Bootstrap 3.3.4中导航栏的背景颜色更改为我想要的任何颜色：

.navbar {background-color: whatever color I want;}

除了我想删除颜色时使用：

.navbar {background-color: transparent;}

我已经尝试了很多方法来完成这项工作，它在先前版本的bootstrap中工作得很好这是一个已知问题，还是有一个新类使导航栏中的背景透明？

<!DOCTYPE html>
<html lang ="en">
<head>
<meta charset="utf-8">
<title>Hilmy Productions</title>
<script src="bower_components/jquery/dist/jquery.min.js"></script>
<script src="bower_components/bootstrap/dist/js/bootstrap.min.js"></script>
<link  href="bower_components/bootstrap/dist/css/bootstrap.min.css" rel="stylesheet">
<link  href="less_css/hilmy_css.css" rel="stylesheet">
</head>
<body>
    <nav class="navbar navbar-default">
  <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">
        <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-1">
      <ul class="nav navbar-nav">
        <li class="active"><a href="#">Link <span class="sr-only">(current)</span></a></li>
        <li><a href="#">Link</a></li>
        <li class="dropdown">
          <a href="#" class="dropdown-toggle" data-toggle="dropdown" role="button" aria-expanded="false">Dropdown <span class="caret"></span></a>
          <ul class="dropdown-menu" role="menu">
            <li><a href="#">Action</a></li>
            <li><a href="#">Another action</a></li>
            <li><a href="#">Something else here</a></li>
            <li class="divider"></li>
            <li><a href="#">Separated link</a></li>
            <li class="divider"></li>
            <li><a href="#">One more separated link</a></li>
          </ul>
        </li>
      </ul>
      <form class="navbar-form navbar-left" role="search">
        <div class="form-group">
          <input type="text" class="form-control" placeholder="Search">
        </div>
        <button type="submit" class="btn btn-default">Submit</button>
      </form>
      <ul class="nav navbar-nav navbar-right">
        <li><a href="#">Link</a></li>
        <li class="dropdown">
          <a href="#" class="dropdown-toggle" data-toggle="dropdown" role="button" aria-expanded="false">Dropdown <span class="caret"></span></a>
          <ul class="dropdown-menu" role="menu">
            <li><a href="#">Action</a></li>
            <li><a href="#">Another action</a></li>
            <li><a href="#">Something else here</a></li>
            <li class="divider"></li>
            <li><a href="#">Separated link</a></li>
          </ul>
        </li>
      </ul>
    </div><!-- /.navbar-collapse -->
  </div><!-- /.container-fluid -->
</nav>
</body>
</html>

CSS：

    html {
    background: url(../imgs/Hilmy/Hilmy_Sign_FINAL.jpg)no-repeat center center fixed;
    -webkit-background-size: cover;
    -moz-background-size: cover;
    -o-background-size: cover;
    background-size: cover;
}

.navbar {
    background-color:transparent;
    background:transparent;
}

1 个答案:

答案 0 :(得分：1)

有两种方法可以解决这个问题：

  • 更改y的{​​{1}}。使页面的主体透明将使底层图像可见。默认情况下，body的背景颜色为白色。

    background-color
    body

或

  • 而不是使用html标记的背景属性将其放在页面正文中。

    html {
  background: url(http://cdn.wonderfulengineering.com/wp-content/uploads/2014/10/simple-wallpaper-26.jpg)no-repeat center center fixed;
  -webkit-background-size: cover;
  -moz-background-size: cover;
  -o-background-size: cover;
  background-size: cover;
}
body {
  background-color: rgba(0, 0, 0, 0) !important;
  /*by default white*/
}
.navbar {
  background-color: transparent !important;
}

/*just to put emphasis on the changes*/
/*.container-fluid {
  border-bottom: solid;
}
*/
a {
  color: black !important;
}
    <link href="https://maxcdn.bootstrapcdn.com/bootstrap/3.3.4/css/bootstrap.min.css" rel="stylesheet" />

<script src="https://ajax.googleapis.com/ajax/libs/jquery/2.1.1/jquery.min.js"></script>
<script src="https://maxcdn.bootstrapcdn.com/bootstrap/3.3.4/js/bootstrap.min.js"></script>

<nav class="navbar navbar-default">
  <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">
        <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-1">
      <ul class="nav navbar-nav">
        <li class="active"><a href="#">Link <span class="sr-only">(current)</span></a>
        </li>
        <li><a href="#">Link</a>
        </li>
        <li class="dropdown">
          <a href="#" class="dropdown-toggle" data-toggle="dropdown" role="button" aria-expanded="false">Dropdown <span class="caret"></span></a>
          <ul class="dropdown-menu" role="menu">
            <li><a href="#">Action</a>
            </li>
            <li><a href="#">Another action</a>
            </li>
            <li><a href="#">Something else here</a>
            </li>
            <li class="divider"></li>
            <li><a href="#">Separated link</a>
            </li>
            <li class="divider"></li>
            <li><a href="#">One more separated link</a>
            </li>
          </ul>
        </li>
      </ul>
      <form class="navbar-form navbar-left" role="search">
        <div class="form-group">
          <input type="text" class="form-control" placeholder="Search">
        </div>
        <button type="submit" class="btn btn-default">Submit</button>
      </form>
      <ul class="nav navbar-nav navbar-right">
        <li><a href="#">Link</a>
        </li>
        <li class="dropdown">
          <a href="#" class="dropdown-toggle" data-toggle="dropdown" role="button" aria-expanded="false">Dropdown <span class="caret"></span></a>
          <ul class="dropdown-menu" role="menu">
            <li><a href="#">Action</a>
            </li>
            <li><a href="#">Another action</a>
            </li>
            <li><a href="#">Something else here</a>
            </li>
            <li class="divider"></li>
            <li><a href="#">Separated link</a>
            </li>
          </ul>
        </li>
      </ul>
    </div>
    <!-- /.navbar-collapse -->
  </div>
  <!-- /.container-fluid -->
</nav>


第二种选择更为可取。
忽略添加到body { background: url(http://cdn.wonderfulengineering.com/wp-content/uploads/2014/10/simple-wallpaper-26.jpg)no-repeat center center fixed; -webkit-background-size: cover; -moz-background-size: cover; -o-background-size: cover; background-size: cover; } .navbar { background-color: transparent !important; } /*just to put emphasis on the changes*/ /*.container-fluid { border-bottom: solid; } */ a { color: black !important; }类和<link href="https://maxcdn.bootstrapcdn.com/bootstrap/3.3.4/css/bootstrap.min.css" rel="stylesheet" /> <script src="https://ajax.googleapis.com/ajax/libs/jquery/2.1.1/jquery.min.js"></script> <script src="https://maxcdn.bootstrapcdn.com/bootstrap/3.3.4/js/bootstrap.min.js"></script> <nav class="navbar navbar-default"> <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"> <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-1"> <ul class="nav navbar-nav"> <li class="active"><a href="#">Link <span class="sr-only">(current)</span></a> </li> <li><a href="#">Link</a> </li> <li class="dropdown"> <a href="#" class="dropdown-toggle" data-toggle="dropdown" role="button" aria-expanded="false">Dropdown <span class="caret"></span></a> <ul class="dropdown-menu" role="menu"> <li><a href="#">Action</a> </li> <li><a href="#">Another action</a> </li> <li><a href="#">Something else here</a> </li> <li class="divider"></li> <li><a href="#">Separated link</a> </li> <li class="divider"></li> <li><a href="#">One more separated link</a> </li> </ul> </li> </ul> <form class="navbar-form navbar-left" role="search"> <div class="form-group"> <input type="text" class="form-control" placeholder="Search"> </div> <button type="submit" class="btn btn-default">Submit</button> </form> <ul class="nav navbar-nav navbar-right"> <li><a href="#">Link</a> </li> <li class="dropdown"> <a href="#" class="dropdown-toggle" data-toggle="dropdown" role="button" aria-expanded="false">Dropdown <span class="caret"></span></a> <ul class="dropdown-menu" role="menu"> <li><a href="#">Action</a> </li> <li><a href="#">Another action</a> </li> <li><a href="#">Something else here</a> </li> <li class="divider"></li> <li><a href="#">Separated link</a> </li> </ul> </li> </ul> </div> <!-- /.navbar-collapse --> </div> <!-- /.container-fluid --> </nav>元素的属性，它们只是为了使更改更加明显。

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