title: how can i using icon-user & icon-lock bootstrap css framwork in a form that in textfield to show the icon
body: <p>im using bootstrap css i need to put icon-user and icon-lock on login form but doesn't appear i need u sre help to solve this problems
  below is my code    </p>
  
  <pre><code>&lt;div class=" container"&gt;
  &lt;div class="hero-unit clearfix"&gt;
  &lt;div class="pull-right"&gt;
    &lt;form class="well"&gt;
    &lt;label&gt;Username&lt;/label&gt;
    &lt;input type="text" class="span3 icon-user" placeholder="Type your username"&gt;
    &lt;label&gt;Password&lt;/label&gt;
    &lt;input type="password" class="span3 icon-lock" placeholder="Type your password"&gt;
    &lt;label class="checkbox"&gt;
    &lt;input type="checkbox"&gt;Remember me
    &lt;/label&gt;
    &lt;button type="submit" class="btn"&gt;Log me in&lt;/button&gt;
   &lt;/form&gt;
  &lt;/div&gt;
  &lt;/div&gt;
  </code></pre>
  
  <p></p>