Hope Page Testimonial Section content issue

Hello,

I am trying to load three groups of content into the testimonial section. The problem I am having with this is because it is coded as testimonials it will resize for text but since I am loading images and video it is not adjusting the size. Below are the three sets of text we are trying to add to the theme options Home page Bottom Feature Client Testimonials Section. Can you help me understand why this code will not allow this section to adjust in height to each slide?

First slide:
<div class="grid_8 alpha">
<iframe src="//player.vimeo.com/video/83020779" width="330" height="194" frameborder="0" webkitallowfullscreen mozallowfullscreen allowfullscreen></iframe>
<p><a href="">A Message from Kate Strickland Mommy's Club Senior VP of Communications</a> from <a href="http://vimeo.com/user21859339">Healthy Home Company</a> on <a href="https://vimeo.com">Vimeo</a>.</p>
</div>
<div class="grid_8">
<iframe src="//player.vimeo.com/video/83020779" width="330" height="194" frameborder="0" webkitallowfullscreen mozallowfullscreen allowfullscreen></iframe> <p><a href="">A Message from Kate Strickland Mommy's Club Senior VP of Communications</a> from <a href="http://vimeo.com/user21859339">Healthy Home Company</a> on <a href="https://vimeo.com">Vimeo</a>.</p>
</div>
<div class="grid_8 omega">
<iframe src="//player.vimeo.com/video/83020779" width="330" height="194" frameborder="0" webkitallowfullscreen mozallowfullscreen allowfullscreen></iframe> <p><a href="">A Message from Kate Strickland Mommy's Club Senior VP of Communications</a> from <a href="http://vimeo.com/user21859339">Healthy Home Company</a> on <a href="https://vimeo.com">Vimeo</a>.</p>
</div>

Second Slide:
Our Partners Above are just some of the companies Healthy Home Company is proud to be partnered with..<br />
<div class="grid_8 alpha"><img style="padding-top:10px;" src="http://www.livingcleantoxicfree.com/wp-content/uploads/2014/06/hh-log-ck-2.png" /><br /><img style="padding-top:10px;" src="http://www.livingcleantoxicfree.com/wp-content/uploads/2014/06/logo-parentsoc.png" /></div>
<div class="grid_8"><img style="padding-top:10px;" src="http://www.livingcleantoxicfree.com/wp-content/uploads/2014/06/hh-logo-deals-2.png" /><br /><img style="padding-top:10px;" src="http://www.livingcleantoxicfree.com/wp-content/uploads/2014/06/logo-mbc.png" /></div>
<div class="grid_8 omega"><img style="padding-top:10px;" src="http://www.livingcleantoxicfree.com/wp-content/uploads/2014/06/logo-spt.png" /><br /><img style="padding-top:10px;" src="http://www.livingcleantoxicfree.com/wp-content/uploads/2014/06/logo-kith.png" /></div>

Third Slide:
Become a Pro Rep!<br />Are you already sharing the Healthy Home products you love with your friends and family?<br />Learn how to apply to become a Professional Representative of our company. Get rewarded for helping others make their home a healthier place to raise their family.