Twitter Bootstrap Navbar格式化示例问题

我是HTML/CSS的新手，在Udemy上观看了一些教程并在Codecademy和Free Code Camp上玩了一下。不要误解，我是非常新的，这是我在Stack Overflow上的第一篇文章，所以请耐心等待。Twitter Bootstrap Navbar格式化示例问题

现在，我一直在尝试了解Twitter Bootstrap v.4.0.0-beta的不同功能，并且现在正在使用导航栏进行操作。我使用了Youtube'Bootstrap教程2 - 安装Bootstrap CDN方式'让我开始使用Bootstrap CDN的框架。

<!DOCTYPE html> 
<html> 
    <head> 
     <meta charset="utf-8"/> 
     <title>Bootstrap the CDN way</title> 
     <!--We link the CDN files here--> 
     <!-- Latest compiled and minified CSS --> 
     <link rel="stylesheet" href="https://maxcdn.bootstrapcdn.com/bootstrap/3.3.7/css/bootstrap.min.css" integrity="sha384-BVYiiSIFeK1dGmJRAkycuHAHRg32OmUcww7on3RYdg4Va+PmSTsz/K68vbdEjh4u" crossorigin="anonymous"> 

     <!-- Optional theme --> 
     <link rel="stylesheet" href="https://maxcdn.bootstrapcdn.com/bootstrap/3.3.7/css/bootstrap-theme.min.css" integrity="sha384-rHyoN1iRsVXV4nD0JutlnGaslCJuC7uwjduW9SVrLvRYooPp2bWYgmgJQIXwl/Sp" crossorigin="anonymous"> 

    </head> 
    <body> 





     <!--Javascript files should be at the bottom of the page--> 
     <script src="https://ajax.googleapis.com/ajax/libs/jquery/3.2.1/jquery.min.js"></script> <!--JQuery file above Javascript so no errors--> 

     <!-- Latest compiled and minified JavaScript --> 
     <script src="https://maxcdn.bootstrapcdn.com/bootstrap/3.3.7/js/bootstrap.min.js" integrity="sha384-Tc5IQib027qvyjSMfHjOMaLkfuWVxZxUPnCJA7l2mCWNIpG9mGCD8wGNIcPD7Txa" crossorigin="anonymous"></script> 
    </body> 
</html>

截至目前，我试图去发现每一个Twitter的引导导航栏的例子不同的组件和子组件的做。我已经将Bootstrap导航栏部分中的代码（位于顶部https://getbootstrap.com/docs/4.0/components/navbar/#toggler的“受支持内容”的正下方）中的代码复制并粘贴到我的框架中，希望它会出现在我的导航栏上，就像它在示例导航栏上所做的那样， this。我的代码如何读取如下图。我的主要问题是（1）为什么粘贴时我的代码格式不正确？（2）如何解决其中的一些问题 - 包括字体，字体大小，出现的3个随机点，全部左对齐以及出现在“导航栏”和“主页”之间的随机按钮。如果这太多了，对任何以前的问题的答案都很好。谢谢一堆。

<!DOCTYPE html> 
<html> 
    <head> 
     <meta charset="utf-8"/> 
     <title>Bootstrap the CDN way</title> 
     <!--We link the CDN files here--> 
     <!-- Latest compiled and minified CSS --> 
     <link rel="stylesheet" href="https://maxcdn.bootstrapcdn.com/bootstrap/3.3.7/css/bootstrap.min.css" integrity="sha384-BVYiiSIFeK1dGmJRAkycuHAHRg32OmUcww7on3RYdg4Va+PmSTsz/K68vbdEjh4u" crossorigin="anonymous"> 

     <!-- Optional theme --> 
     <link rel="stylesheet" href="https://maxcdn.bootstrapcdn.com/bootstrap/3.3.7/css/bootstrap-theme.min.css" integrity="sha384-rHyoN1iRsVXV4nD0JutlnGaslCJuC7uwjduW9SVrLvRYooPp2bWYgmgJQIXwl/Sp" crossorigin="anonymous"> 

    </head> 
    <body> 
     <nav class="navbar navbar-expand-lg navbar-light bg-light"> 
      <a class="navbar-brand" href="#">Navbar</a> 
      <button class="navbar-toggler" type="button" data-toggle="collapse" data-target="#navbarSupportedContent" aria-controls="navbarSupportedContent" aria-expanded="false" aria-label="Toggle navigation"> 
       <span class="navbar-toggler-icon"></span> 
      </button> 

      <div class="collapse navbar-collapse" id="navbarSupportedContent"> 
       <ul class="navbar-nav mr-auto"> 
        <li class="nav-item active"> 
        <a class="nav-link" href="#">Home <span class="sr-only">(current)</span></a> 
        </li> 
        <li class="nav-item"> 
        <a class="nav-link" href="#">Link</a> 
        </li> 
        <li class="nav-item"> 
        <a class="nav-link disabled" href="#">Disabled</a> 
        </li> 
       </ul> 
       <form class="form-inline my-2 my-lg-0"> 
        <input class="form-control mr-sm-2" type="text" placeholder="Search" aria-label="Search"> 
        <button class="btn btn-outline-success my-2 my-sm-0" type="submit">Search</button> 
       </form> 
      </div> 
     </nav> 





     <!--Javascript files should be at the bottom of the page--> 
     <script src="https://ajax.googleapis.com/ajax/libs/jquery/3.2.1/jquery.min.js"></script> <!--JQuery file above Javascript so no errors--> 

     <!-- Latest compiled and minified JavaScript --> 
     <script src="https://maxcdn.bootstrapcdn.com/bootstrap/3.3.7/js/bootstrap.min.js" integrity="sha384-Tc5IQib027qvyjSMfHjOMaLkfuWVxZxUPnCJA7l2mCWNIpG9mGCD8wGNIcPD7Txa" crossorigin="anonymous"></script> 
    </body> 
</html>

来源

2017-08-16 Devon Rusinek

您使用的是版本4的代码，但包含3.3.7的css。添加正确的CSS文件，你应该罚款：

<html> 
 

 
<head> 
 
    <meta charset="utf-8" /> 
 
    <title>Bootstrap the CDN way</title> 
 
    <!--We link the CDN files here--> 
 
    <!-- Latest compiled and minified CSS --> 
 
<link rel="stylesheet" href="https://maxcdn.bootstrapcdn.com/bootstrap/4.0.0-beta/css/bootstrap.min.css" integrity="sha384-/Y6pD6FV/Vv2HJnA6t+vslU6fwYXjCFtcEpHbNJ0lyAFsXTsjBbfaDjzALeQsN6M" crossorigin="anonymous"> 
 

 
</head> 
 

 
<body> 
 
    <nav class="navbar navbar-expand-lg navbar-light bg-light"> 
 
    <a class="navbar-brand" href="#">Navbar</a> 
 
    <button class="navbar-toggler" type="button" data-toggle="collapse" data-target="#navbarSupportedContent" aria-controls="navbarSupportedContent" aria-expanded="false" aria-label="Toggle navigation"> 
 
       <span class="navbar-toggler-icon"></span> 
 
      </button> 
 

 
    <div class="collapse navbar-collapse" id="navbarSupportedContent"> 
 
     <ul class="navbar-nav mr-auto"> 
 
     <li class="nav-item active"> 
 
      <a class="nav-link" href="#">Home <span class="sr-only">(current)</span></a> 
 
     </li> 
 
     <li class="nav-item"> 
 
      <a class="nav-link" href="#">Link</a> 
 
     </li> 
 
     <li class="nav-item"> 
 
      <a class="nav-link disabled" href="#">Disabled</a> 
 
     </li> 
 
     </ul> 
 
     <form class="form-inline my-2 my-lg-0"> 
 
     <input class="form-control mr-sm-2" type="text" placeholder="Search" aria-label="Search"> 
 
     <button class="btn btn-outline-success my-2 my-sm-0" type="submit">Search</button> 
 
     </form> 
 
    </div> 
 
    </nav> 
 

 

 
    <!--Javascript files should be at the bottom of the page--> 
 
    <script src="https://ajax.googleapis.com/ajax/libs/jquery/3.2.1/jquery.min.js"></script> 
 
    <!--JQuery file above Javascript so no errors--> 
 

 
    <!-- Latest compiled and minified JavaScript --> 
 
    <script src="https://maxcdn.bootstrapcdn.com/bootstrap/3.3.7/js/bootstrap.min.js" integrity="sha384-Tc5IQib027qvyjSMfHjOMaLkfuWVxZxUPnCJA7l2mCWNIpG9mGCD8wGNIcPD7Txa" crossorigin="anonymous"></script> 
 
</body> 
 

 
</html>

来源

2017-08-16 16:50:52 fen1x

这是非常快的，而且超级有帮助的。谢谢。 –

Twitter Bootstrap Navbar格式化示例问题

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