導航欄摺疊不顯示在768px

Question

我正在使用Bootstrap v3.3.6和jQuery v2.1.1。 我想問爲什麼我的navbar沒有去nav collapse在分辨率sm？ 根據分辨率width: 768px,nav collapse顯示。但在width: 768px它沒有。

<link href="https://maxcdn.bootstrapcdn.com/bootstrap/3.3.6/css/bootstrap.min.css" rel="stylesheet" /> 
 
<nav class="navbar navbar-default navbar-inverse navbar-fixed-top"> 
 
    <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" aria-expanded="false"> 
 
     <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="#"> 
 
     <img src="img/logo.png"> 
 
     </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><a href="people.html">People</a> 
 
     </li> 
 
     <li class="active"><a href="index.html">Gallery</a> 
 
     </li> 
 
     <li><a href="inspiration.html">Inspiration</a> 
 
     </li> 
 
     </ul> 
 
     <ul class="nav navbar-nav navbar-right"> 
 
     <li><a href="listJob.html">Jobs oportunity</a> 
 
     </li> 
 
     <li><a href="">hirring a chief?</a> 
 
     </li> 
 
     <li><a href="signUp.html">login|signup</a> 
 
     </li> 
 
     </ul> 
 
    </div> 
 
    <!-- /.navbar-collapse --> 
 
    </div> 
 
    <!-- /.container-fluid --> 
 
</nav> 
 
<script src="https://ajax.googleapis.com/ajax/libs/jquery/2.1.1/jquery.min.js"></script> 
 
<script src="https://maxcdn.bootstrapcdn.com/bootstrap/3.3.6/js/bootstrap.min.js"></script>

請告訴我如何使nav collapse在min-width: 768px露面？

Answer 1

http://getbootstrap.com/css/#grid-media-queries

引導媒體查詢默認爲小於768px（所以不包括）

/* Extra small devices (phones, less than 768px) */ 
/* No media query since this is the default in Bootstrap */ 

這就是爲什麼它適用於小於768px和不包括。

sm媒體查詢INCLUDES 768px及以上。

/* Small devices (tablets, 768px and up) */ 
@media (min-width: @screen-sm-min) { ... } 

您可以添加自己的媒體查詢，包括768px

@media screen and (max-width: 768px) { ... }