<div class="center">
    <iframe src="{chatroulette}" frameborder="0" scrolling="no" height="100%" width="100%"></iframe>
</div>

<div class="center">
    <iframe src="{chatroulette}" frameborder="0" scrolling="no" height="558" width="100%"></iframe>
</div>

Change height to match perfectly the new chatroulette's size
Change height to match perfectly the new chatroulette's size
