How to applying css style into an iframe content?

[gymnhieme]

I am trying to apply css style for an content inside the iframe, please check this link http://jsfiddle.net/pPqGe/jQuery:\[code\]$(document).ready(function() { $('iframe').contents().find('h1').css('color','red');});\[/code\]HTML:\[code\]<iframe src="http://stackoverflow.com/questions/15812946/mysite" width="100%" height="100%" id="myframe"></iframe>\[/code\]For iframe source I have used live website.Thanks,