product list fix height image css
<div class="container">
<img width="400" height="400" src="http://i.stack.imgur.com/aEEkn.png">
<img width="400" height="400" src="http://i.stack.imgur.com/aEEkn.png">
<img width="400" height="400" src="http://i.stack.imgur.com/aEEkn.png">
<img width="400" height="400" src="http://i.stack.imgur.com/aEEkn.png">
<img width="400" height="400" src="http://i.stack.imgur.com/aEEkn.png">
<img width="400" height="400" src="http://i.stack.imgur.com/aEEkn.png">
<img width="400" height="400" src="http://i.stack.imgur.com/aEEkn.png">
<img width="400" height="400" src="http://i.stack.imgur.com/aEEkn.png">
<img width="400" height="400" src="http://i.stack.imgur.com/aEEkn.png">
</div>