title: bootstrap 3 full width image and div in container
body: <p>I'm trying to set some divs to <code>width: 100%</code> on Twitter Bootstrap 3 (including no paddings or margins).</p>
  
  <p>JSfiddle: <a href="http://jsfiddle.net/rq9ycjcx/" rel="nofollow">http://jsfiddle.net/rq9ycjcx/</a></p>
  
  <p>HTML:</p>
  
  <pre><code>&lt;div class="container"&gt;
      &lt;header&gt;
          &lt;div class="row"&gt;
              &lt;div class="col-md-2"&gt;
                  &lt;img src="http://placehold.it/150x50"&gt;
              &lt;/div&gt;
              &lt;div class="col-md-10"&gt;Menu&lt;/div&gt;
          &lt;/div&gt;
          &lt;div class="row gray"&gt;
              &lt;div class="col-md-6"&gt;
              &lt;h1&gt;Page Title&lt;/h1&gt;
              &lt;/div&gt;
              &lt;div class="col-md-6"&gt;
                  &lt;div class="breadcrumbs"&gt;Main page &gt; page &lt;/div&gt;
              &lt;/div&gt;
          &lt;/div&gt;
  
          &lt;div class="row"&gt;
              &lt;div class="col-md-12"&gt;
              &lt;img src="http://placehold.it/350x150" /&gt;
              &lt;/div&gt;    
          &lt;/div&gt;    
      &lt;/header&gt;
  
      &lt;footer&gt;
      &lt;div class="row"&gt;
          &lt;div class="col-md-12"&gt;Content&lt;/div&gt;
      &lt;/div&gt;
      &lt;div class="row dark"&gt;
          &lt;div class="col-md-3"&gt;Footer 1&lt;/div&gt;
          &lt;div class="col-md-3"&gt;Footer 2&lt;/div&gt;
          &lt;div class="col-md-3"&gt;Footer 3&lt;/div&gt;
          &lt;div class="col-md-3"&gt;Footer 4&lt;/div&gt;
      &lt;/div&gt;
      &lt;/footer&gt;    
  &lt;/div&gt;
  </code></pre>
  
  <ol>
  <li><p>What is the right way to get image <code>http://placehold.it/350x150</code> <code>width: 100%</code>, including no paddings or margins?</p></li>
  <li><p>Page title and breadcrumbs height is <code>80px</code>.<br>
  If I resize window to smaller screen (e.g. mobile), text <code>Main page &gt; page</code> disappears (it's somewhere but not on own row). 
  How to fix it?</p></li>
  </ol>