How to include iframe without scrollbar?

I want to display a page content in my cordova app, this is my code:

<div class="page-content">
        <div class="block">
            <iframe src="http://example.com" style="height:100%;width:100%;" frameborder="0" webkitallowfullscreen mozallowfullscreen allowfullscreen></iframe>
        </div>
</div>

the problem is even if i set height:100% i still get two scrollbars, one for the page and one from the iframe, what i want is to not show to iframe scrollbar, the hight of the page is variable so i can’t set it manually.
thanks