How to hide Horizontal scrollbar in Iframe tag?

Question

I have an iframe inside a div. I need to hide the horizontal scrolling bar. I just need the vertical one activated.

HTML Code

<div id="rc">
    <div>
        <iframe class="defRC" src="url"></iframe>
    </div>
    <div class="clear">
</div>

I've added some CSS code but without success

.defRC {
   overflow-y: hidden;
   width: 1000px; 
   height: 600px;
}

Answer 1

<iframe scr="url" class="defRC" scrolling="no" />