Bootstrap：与jumbotron重叠的div

我是bootstrap的初学者，我一直在尝试使用它来为我的网站创建主页。我现在面临的问题是这样的：Bootstrap：与jumbotron重叠的div

三个图像重叠的超大屏幕，我想不通为什么。以下是HTML代码：

<!--navigation bar--> 
<div class="navbar-wrapper"> 


    <nav class="navbar navbar-inverse navbar-static-top"> 
     <div class="container"> 
     <div class="navbar-header"> 
      <button type="button" class="navbar-toggle collapsed" data-toggle="collapse" data-target="#navbar" aria-expanded="false" aria-controls="navbar"> 
      <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="logo" href="#"><img src="C:\Users\Mickey.Utopia\Documents\EdHoc\temp-logo.jpg" height= "50" width = "80"></a> 
     </div> 
     <div class="navbar-collapse collapse navbar-right"> 
      <ul class="nav navbar-nav"> 
      <!-- 
      <li class="active"><a href="#">Home</a></li> 
      --> 
      <li class = "animate"><a href="#about">About</a></li> 
      <li><a href="#contact">Contact</a></li> 
      <li><a href = "C:\Users\Mickey.Utopia\Documents\EdHoc\Sign_in.htm">Sign In</a></li> 
      <li><a href = "#">Sign Up</a></li> 
      </ul> 
     </div> 
     </div> 
    </nav> 
</div> 



<div class='jumbotron' > 
<div class="container"> 
    <div class="row"> 
    <div class="col-xs-12 col-lg-12 col-sm-12" > 
     <h1 id="jumb">Welcome to EdHoc. <br>Discover the best places to learn and collaborate with friends to make learning easier.</h1> 
      </div> 
      <div class="row"> 
       <div class="col-xs-8 col-lg-8 col-sm-8" id="search"> 
       <!--Search Bar here--> 
       <input type="text" class="form-control" placeholder="Search by location, institute, discipline" id="srcb"> 
       <!--Button--> 
       </div> 
       <div class="col-xs-4 col-lg-4 col-sm-4" id="button"> 
        <a href="" class="btn btn-default">Go</a> 
       </div> 
      </div> 
      </div> 
     </div> 
     </div> 
     <hr> 

     <div class="container marketing"> 

    <!-- Three columns of text below the jumbotron --> 
    <div class="row"> 
    <div class="col-sm-8 col-xs-12 col-lg-4"> 
     <img class="img-circle" src="data:image/gif;base64,R0lGODlhAQABAIAAAHd3dwAAACH5BAAAAAAALAAAAAABAAEAAAICRAEAOw==" alt="Generic placeholder image" width="140" height="140"> 
     <h2>Heading</h2> 
     <p>Donec sed odio dui. Etiam porta sem malesuada magna mollis euismod. Nullam id dolor id nibh ultricies vehicula ut id elit. Morbi leo risus, porta ac consectetur ac, vestibulum at eros. Praesent commodo cursus magna.</p> 
     <p><a class="btn btn-default" href="#" role="button">View details &raquo;</a></p> 
    </div><!-- /.col-lg-4 --> 
    <div class="col-lg-4"> 
     <img class="img-circle" src="data:image/gif;base64,R0lGODlhAQABAIAAAHd3dwAAACH5BAAAAAAALAAAAAABAAEAAAICRAEAOw==" alt="Generic placeholder image" width="140" height="140"> 
     <h2>Heading</h2> 
     <p>Duis mollis, est non commodo luctus, nisi erat porttitor ligula, eget lacinia odio sem nec elit. Cras mattis consectetur purus sit amet fermentum. Fusce dapibus, tellus ac cursus commodo, tortor mauris condimentum nibh.</p> 
     <p><a class="btn btn-default" href="#" role="button">View details &raquo;</a></p> 
    </div><!-- /.col-lg-4 --> 
    <div class="col-lg-4"> 
     <img class="img-circle" src="data:image/gif;base64,R0lGODlhAQABAIAAAHd3dwAAACH5BAAAAAAALAAAAAABAAEAAAICRAEAOw==" alt="Generic placeholder image" width="140" height="140"> 
     <h2>Heading</h2> 
     <p>Donec sed odio dui. Cras justo odio, dapibus ac facilisis in, egestas eget quam. Vestibulum id ligula porta felis euismod semper. Fusce dapibus, tellus ac cursus commodo, tortor mauris condimentum nibh, ut fermentum massa justo sit amet risus.</p> 
     <p><a class="btn btn-default" href="#" role="button">View details &raquo;</a></p> 
    </div><!-- /.col-lg-4 --> 
    </div><!-- /.row --> 

<!-- Bootstrap core JavaScript 
================================================== --> 
<!-- Placed at the end of the document so the pages load faster --> 
<script src="https://ajax.googleapis.com/ajax/libs/jquery/1.11.3/jquery.min.js"></script> 
<script src="\bootstrap-3.3.5-dist\bootstrap-3.3.5-dist\js\bootstrap.min.js"></script> 

<!-- IE10 viewport hack for Surface/desktop Windows 8 bug --> 
<script src="../../assets/js/ie10-viewport-bug-workaround.js"></script>

相关的CSS（除了引导文件）：

.navbar { 
background-color: transparent; 
border: none; 
} 
.jumbotron { 
height: 400px; 
background-image: url(../images/woman.jpg); 
background-size: cover; 
border: none; 
width: 100%; 
position: absolute; 
top:0; 
z-index: -100; 
} 

#jumb { 
color: white; 
font-size: 20px; 
}

我该如何解决这个问题？

来源

2015-10-25 user3650571

你本地开发，或者你可以把链接发给站点着中的jsfiddle等复制，可以采取在检查快看？ – AdamJeffers

请不要在这里要求紧急回复 - 关于Stack Overflow的问题以及网上的任何地方都由志愿者回答，我们认为所有问题同等重要。 – halfer

打开检查器，然后右键单击灰色圆圈并选择检查元素。它应该突出显示html中的元素，并从那里排除故障。可能是这个？ –

你有你的jumbotron股利用位置：绝对这就是为什么它下面的内容重叠。见下列参考文献：

position：absolute;元素的位置：绝对;定位为相对于最近定位的祖先（而不是相对于视口定位，如固定）。

但是;如果绝对定位元素没有定位祖先，则它使用文档主体，并随着页面滚动移动页面。

注意：“定位”元素的位置是除静态以外的任何东西。

而且

重叠的元素 当元件被定位，它们可以重叠其它元件。

z-index属性指定元素的堆栈顺序（其中元素应放置在其他元素的前面或后面）。

一个元素可以有正面或负面的堆叠顺序：

Absolute, Relative, Fixed Positioning: How Do They Differ?

*您也有一些结构性的矛盾，如col-sm-8 col-xs-12 col-lg-4这是没有意义的地方，以较大的尺寸之间的最小断点大小：请参阅Grid

您应该首先查阅文档，了解这些组件的结构以及它们如何相互交互。 Docs

.navbar.navbar-custom { 
 
    background: none; 
 
    border: none; 
 
    margin-bottom: -50px; 
 
} 
 
div.jumbotron { 
 
    height: 400px; 
 
    background-image: url(http://interiorofficesystems.com/wp-content/themes/ios/uploads/product_photo/afe3a3ed124cb421preview%20-%20114371%20-%20Tayco_View02.jpg); 
 
    background-size: cover; 
 
    border: none; 
 
} 
 
div.jumbotron .jumb { 
 
    margin-bottom: 20px; 
 
    color: white; 
 
}

<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" /> 
 
<nav class="navbar navbar-inverse navbar-static-top navbar-custom"> 
 
    <div class="container"> 
 
    <div class="navbar-header"> 
 
     <button type="button" class="navbar-toggle collapsed" data-toggle="collapse" data-target="#navbar" aria-expanded="false" aria-controls="navbar"> <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="logo" href="#"> 
 
     <img src="http://placehold.it/80x50/266080/fff" height="50" width="80"> 
 
     </a> 
 

 
    </div> 
 
    <div class="collapse navbar-collapse" id="navbar"> 
 
     <ul class="nav navbar-nav navbar-right"> 
 
     <li class="animate"><a href="#about">About</a> 
 

 
     </li> 
 
     <li><a href="#contact">Contact</a> 
 

 
     </li> 
 
     <li><a href="C:\Users\Mickey.Utopia\Documents\EdHoc\Sign_in.htm">Sign In</a> 
 

 
     </li> 
 
     <li><a href="#">Sign Up</a> 
 

 
     </li> 
 
     </ul> 
 
    </div> 
 
    </div> 
 
</nav> 
 
<div class='jumbotron'> 
 
    <div class="container"> 
 
    <div class="jumb"> 
 
     <h1>Welcome to EdHoc.</h1> 
 
     <br> 
 
     <p>Discover the best places to learn and collaborate with friends to make learning easier.</p> 
 
    </div> 
 
    <div class="input-group input-group-lg"> 
 
     <input type="text" id="search" class="form-control" placeholder="Search by location, institute, discipline" id="srcb"> <span class="input-group-btn"> 
 
     <button class="btn btn-default btn-lg" id="button" type="button">Go!</button> 
 
     </span> 
 

 
    </div> 
 
    </div> 
 
</div> 
 
<div class="container text-center"> 
 
    <div class="row"> 
 
    <div class="col-sm-4"> 
 
     <img class="img-circle" src="http://placehold.it/200x200/000" alt="Generic placeholder image" width="140" height="140"> 
 
     <h2>Heading</h2> 
 

 
     <p>Donec sed odio dui. Etiam porta sem malesuada magna mollis euismod. Nullam id dolor id nibh ultricies vehicula ut id elit. Morbi leo risus, porta ac consectetur ac, vestibulum at eros. Praesent commodo cursus magna.</p> <a class="btn btn-default" 
 
     href="#" role="button">View details &raquo;</a> 
 

 
    </div> 
 
    <div class="col-sm-4"> 
 
     <img class="img-circle" src="http://placehold.it/200x200/000" alt="Generic placeholder image" width="140" height="140"> 
 
     <h2>Heading</h2> 
 

 
     <p>Duis mollis, est non commodo luctus, nisi erat porttitor ligula, eget lacinia odio sem nec elit. Cras mattis consectetur purus sit amet fermentum. Fusce dapibus, tellus ac cursus commodo, tortor mauris condimentum nibh.</p> <a class="btn btn-default" 
 
     href="#" role="button">View details &raquo;</a> 
 

 
    </div> 
 
    <div class="col-sm-4"> 
 
     <img class="img-circle" src="http://placehold.it/200x200/000" alt="Generic placeholder image" width="140" height="140"> 
 
     <h2>Heading</h2> 
 

 
     <p>Donec sed odio dui. Cras justo odio, dapibus ac facilisis in, egestas eget quam. Vestibulum id ligula porta felis euismod semper. Fusce dapibus, tellus ac cursus commodo, tortor mauris condimentum nibh, ut fermentum massa justo sit amet risus.</p> 
 
     <a 
 
     class="btn btn-default" href="#" role="button">View details &raquo;</a> 
 

 
    </div> 
 
    </div> 
 
</div>

来源

2015-10-25 20:00:37 vanburen

谢谢。尽管它带来了一个新问题，但您的更改解决了最初的问题。删除“position：absolute”会导致jumbotron放置在导航栏下方，但我想让导航栏与jumbotron重叠。如果我删除绝对财产，我将如何继续这样做？ – user3650571

我在昨天发布的答案中没有看到这个问题，最初是这样，然后我将图像转回到您发布的图像上，并将其更改为图像位于导航栏下方，而不是下方，请再次参阅片段。 – vanburen

Bootstrap：与jumbotron重叠的div

回答

相关问题