Responsive iframe

Small snippet for a responsive iframe solution with fixed aspect-ratio.

HTML

<div class="wrapper">
    <div class="h_iframe">
        <iframe src="http://www.cnn.com" scrolling="no" name="iframemc" id="iframemc" frameborder="0" runat="server" ></iframe>
    </div>
</div>

CSS

#iframemc {
    background-color: white; 
    float:none; 
    margin-left:40px; 
    overflow:hidden
}