How to convert it to JADE template engine?

I do not know how can i convert this code:

<!--[if IE 9]>
    <style>
        .spread{
            font-size: 12px;
        }
    </style>    
<![endif]-->

in Jade. Could someone help me?

Thank you!

//if IE 9
  style
    .spread{font-size: 12px;}

Teach a man to fish...

http://html2jade.aaron-powell.com/

You should probably keep it as it is, since jade supports inline html.