边界不与引导程序4

我是新手引导，我不知道如果我做错了什么，但我只是不能让class =“border border-danger”去工作。休息所有其他风格工作得很好。这是我的代码。边界不与引导程序4

<html lang="en"> 
 
    <head> 
 
     <link rel="stylesheet" href="https://maxcdn.bootstrapcdn.com/bootstrap/4.0.0-alpha.6/css/bootstrap.min.css" integrity="sha384-rwoIResjU2yc3z8GV/NPeZWAv56rSmLldC3R/AZzGRnGxQQKnKkoFVhFQhNUwEyJ" crossorigin="anonymous"> 
 
     <script src="https://code.jquery.com/jquery-3.1.1.slim.min.js" integrity="sha384-A7FZj7v+d/sdmMqp/nOQwliLvUsJfDHW+k9Omg/a/EheAdgtzNs3hpfag6Ed950n" crossorigin="anonymous"></script> 
 
     <script src="https://cdnjs.cloudflare.com/ajax/libs/tether/1.4.0/js/tether.min.js" integrity="sha384-DztdAPBWPRXSA/3eYEEUWrWCy7G5KFbe8fFjk5JAIxUYHKkDx6Qin1DkWx51bBrb" crossorigin="anonymous"></script> 
 
     <script src="https://maxcdn.bootstrapcdn.com/bootstrap/4.0.0-alpha.6/js/bootstrap.min.js" integrity="sha384-vBWWzlZJ8ea9aCX4pEW3rVHjgjt7zpkNpZk+02D9phzyeVkE+jo0ieGizqPLForn" crossorigin="anonymous"></script> 
 
    </head> 
 
    <body class="container"> 
 
     <div class=" text-center m-2 text-primary"> 
 
      
 
      <h2 class="h4"> SAMPLE DATA FOR RENDERING </h2>  
 
      <blockquote class="blockquote bg-warning text-white p-2 border" >Lorem ipsum dolor sit amet, consectetur adipiscing elit, sed do eiusmod tempor incididunt ut labore et dolore magna aliqua. 
 
       Ut enim ad minim veniam, quis nostrud exercitation ullamco laboris nisi ut aliquip ex ea commodo consequat. 
 
       Duis aute irure dolor in reprehenderit in voluptate velit esse cillum dolore eu fugiat nulla pariatur. 
 
       Excepteur sint occaecat cupidatat non proident, sunt in culpa qui officia deserunt mollit anim id est laborum. - Lorem Ipsum</blockquote> 
 

 
      
 
     </div> 
 
     
 
     <div class=" border border-danger border"> 
 
      <p class="text-uppercase w-75" > Duis aute irure dolor in reprehenderit in voluptate velit esse cillum dolore eu fugiat nulla pariatur. </p><br> 
 
      <button class="btn btn-primary btn-block"> Submit </button> 
 
     </div> 
 
     
 
    </body> 
 
</html>

输出此代码段如下所示。

来源

2017-09-10 Jeevan Varughese

我想你使用的是bootstrap4 alpha版本。在这个版本border-danger在我看来不存在。使用bootstrap4测试版。

来源

2017-09-10 12:40:30

辉煌，是解决我的问题。现在工作正常。 –

可能帮助别人。这些是我用来使其工作的样式表和脚本版本。

<link rel="stylesheet" href="https://maxcdn.bootstrapcdn.com/bootstrap/4.0.0-beta/css/bootstrap.min.css" integrity="sha384-/Y6pD6FV/Vv2HJnA6t+vslU6fwYXjCFtcEpHbNJ0lyAFsXTsjBbfaDjzALeQsN6M" crossorigin="anonymous"> 
<script src="https://code.jquery.com/jquery-3.2.1.slim.min.js" integrity="sha384-KJ3o2DKtIkvYIK3UENzmM7KCkRr/rE9/Qpg6aAZGJwFDMVNA/GpGFF93hXpG5KkN" crossorigin="anonymous"></script> 
<script src="https://cdnjs.cloudflare.com/ajax/libs/popper.js/1.11.0/umd/popper.min.js" integrity="sha384-b/U6ypiBEHpOf/4+1nzFpr53nxSS+GLCkfwBdFNTxtclqqenISfwAzpKaMNFNmj4" crossorigin="anonymous"></script>

来源

2017-09-10 12:52:53

边界不与引导程序4

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