background cover

<!DOCTYPE html>
<html>

  <head>
   <style>
     .cover{
       width: 100%;
       height: 300px;
       background: url('http://goo.gl/IOF7sV');
       background-size: cover;
     }
   </style>
  </head>

  <body>
    <div class="cover">
      
    </div>
  </body>

</html>