twitter bootstrap resize images

HTML

<link rel="stylesheet" href="//netdna.bootstrapcdn.com/twitter-bootstrap/2.3.2/css/bootstrap-combined.min.css">
<script src="//netdna.bootstrapcdn.com/twitter-bootstrap/2.3.2/js/bootstrap.min.js"></script>
<container>
    <img src="http://dlf.booking.cache.spectra-systems.com/images/319.jpg" alt="logo1" />  
</container>
<container>
    <a class="logo" href="/" alt="logo1" />  
</container>

CSS

.logo
{
    background-image: url('http://dlf.booking.cache.spectra-systems.com/images/319.jpg');    
        width: 100%;
        max-width: 100%;    
}