Neighborhood images 2 : “Oops, try again. Add a <div class=“thumbnail”>..</div>”


#1

The website does not allow to submit "Make a Website: Bootstrap" but I do not see why, can you please help me?

<!DOCTYPE html>
<html>

  <head>
    <link href="http://s3.amazonaws.com/codecademy-content/courses/ltp/css/shift.css" rel="stylesheet">
    <link rel="stylesheet" href="http://s3.amazonaws.com/codecademy-content/courses/ltp/css/bootstrap.css">
    <link rel="stylesheet" href="main.css">
  </head>

  <body>
    <div class="nav">
      <div class="container">
        <ul class="pull-left">
          <li><a href="#">Name</a></li>
          <li><a href="#">Browse</a></li>
        </ul>
        <ul class="pull-right">
          <li><a href="#">Sign Up</a></li>
          <li><a href="#">Log In</a></li>
          <li><a href="#">Help</a></li>
        </ul>
      </div>
    </div>

    <div class="jumbotron">
      <div class="container">
        <h1>Find a place to stay.</h1>
        <p>Rent from people in over 34,000 cities and 192 countries.</p>
        <a href="#">Learn More</a>
      </div>
    </div> 
    
    <div class="neighborhood-guides">
     <<div class="container">
      <h2> Neighborhood Guides
      </h2>
      <p> Not sure where to stay? We've created neighborhood guides for cities all around the world.
      </p>
      
    <div class="row">
        
        <div class="col-md-4">
          <div class="thumbnail">
            <img src="http://goo.gl/0sX3jq">
          </div>
          <div class="thumbnail"> 
            <img src="http://goo.gl/an2HXY">
          </div>
        </div>

    </div>
    
        <div class="col-md-4">
           <div class="thumbnail">
             <img src="http://goo.gl/Av1pac">
           </div>
        
        <div class="col-md-4">  
           <div class="thumbnail">
             <img src="http://goo.gl/vw43v1">
           </div>
        </div>
        
        <div class="col-md-4">
           <div class="thumbnail">
             <img src="http://goo.gl/0Kd7UO">
           </div>
        </div>
           
    
    </div>

    <div class="learn-more">
	  <div class="container">
		<div class="row">
	      <div class="col-md-4">
			<h3>Travel</h3>
			<p>From apartments and rooms to treehouses and boats: stay in unique spaces in 192 countries.</p>
			<p><a href="#">See how to travel on Airbnb</a></p>
	      </div>
		  <div class="col-md-4">
			<h3>Host</h3>
			<p>Renting out your unused space could pay your bills or fund your next vacation.</p>
			<p><a href="#">Learn more about hosting</a></p>
		  </div>
		  <div class="col-md-4">
			<h3>Trust and Safety</h3>
			<p>From Verified ID to our worldwide customer support team, we've got your back.</p>
			<p><a href="#">Learn about trust at Airbnb</a></p>
		  </div>
	    </div>
	  </div>
	</div>
  </body>
</html>

#2

The problem is here:

   <div class="row">
        
        <div class="col-md-4">
          <div class="thumbnail">
            <img src="http://goo.gl/0sX3jq">
          </div>
          <div class="thumbnail"> 
            <img src="http://goo.gl/an2HXY">
          </div>
        </div>

    </div> <!-- this is closing your row too soon -->