title: My bootstrap grid system not working
body: <p>I had problem to apply my bootstrap gird system into the web-page. The bootstrap I applied is bootstrap 3.3.5, downloaded it from the <a href="http://getbootstrap.com/" rel="nofollow noreferrer">getbootstrap.com</a>. And I had all the config things done, here is my project files directory:</p>
  
  <p><a href="https://i.stack.imgur.com/y9uEm.png" rel="nofollow noreferrer"><img src="https://i.stack.imgur.com/y9uEm.png" alt="file directory"></a></p>
  
  <p>And here is my index.html structure:</p>
  
  <pre><code>&lt;html&gt;
  &lt;head&gt;
      &lt;title&gt;My bootstrap&lt;/title&gt;
  
      &lt;meta charset="utf-8”&gt;
      &lt;meta name="viewport” content="width=‘device-width’,inital-scale=1.0”&gt;
  
      &lt;link href="css/bootstrap.min.css” rel="stylesheet”&gt;
      &lt;link href="css/custom.css” rel="stylesheet”&gt;
  
      &lt;script src="/js/respond.min.js”&gt;&lt;/script&gt;
  &lt;/head&gt;
  
  &lt;body&gt;
      &lt;div class="container"&gt;
          &lt;div class="row"&gt;
              &lt;div class="col-lg-3 col-md-6 col-sm-6 col-xs-12"&gt;
                  &lt;p&gt;text&lt;/p&gt;
              &lt;/div&gt;
  
              &lt;div class="col-lg-3 col-md-6 col-sm-6 col-xs-12"&gt;
                  &lt;p&gt;text&lt;/p&gt;
              &lt;/div&gt;
  
              &lt;div class="col-lg-3 col-md-6 col-sm-6 col-xs-12"&gt;
                  &lt;p&gt;text&lt;/p&gt;
              &lt;/div&gt;
  
              &lt;div class="col-lg-3 col-md-6 col-sm-6 col-xs-12"&gt;
                  &lt;p&gt;text&lt;/p&gt;
              &lt;/div&gt;
          &lt;/div&gt;
  
          &lt;script src="http://code.jquery.com/jquery-latest.min.js"&gt;&lt;/script&gt;
          &lt;script src="js/bootstrap.min.js"&gt;&lt;/script&gt;
      &lt;/div&gt;
  &lt;/body&gt;
  &lt;/html&gt;
  </code></pre>
  
  <p>However the grid system not working when the browser size changed, it's  always stay the original style as the 4 divs layout in vertical. Am I doing something wrong?</p>