CSS help please?

https://www.lintonhallrealtors.com/mobile-apps/

For some reason the tabbed content area is not all appearing withing the box with the rounded corners. It’s very subtle, but it bugs me. Can anyone help?

This is a mock-up of the mobile apps page. This is the common content above the tabbed interface.

[tab name="iPhone"][one-half-first]
<h2 class="fancyText superLightText empTextSuper fNormal">Linton Hall Realtors? iPhone App</h2>
<strong>Find exactly what you’re looking for.</strong>
Use search filters to see all homes for sale that match your interests.

<strong>Be the first to know.</strong>
Get notifications about new matches as soon as they come on the market.

<strong>Team up with a local expert.</strong>
Your local real estate agent is always ready to help.
<p class="largeVMarg"><a class="medRtMarg primaryBtn btnEmphasis" href="https://itunes.apple.com/us/app/ziprealty-real-estate/id340513671?mt=8" target="_blank">Download Now</a>
<a href="https://itunes.apple.com/us/app/ziprealty-real-estate/id340513671?mt=8" target="_blank">
<img style="vertical-align: middle;" alt="ZipRealty on Apple App Store" src="https://images.static-ziprealty.com/z/20130509172912/images/mobile/2013/apple_app_store.png" />
</a></p>
[/one-half-first]
[one-half]
<img class="alignright size-full wp-image-4259" alt="iPad-placeholder" src="https://www.lintonhallrealtors.com/wp-content/uploads/2013/05/iPad-placeholder.png" width="415" height="415" />
[/one-half][/tab]
[tab name="iPad"][one-half-first][/one-half-first][one-half][/one-half][/tab]
[tab name="Android"][one-half-first][/one-half-first][one-half][/one-half][/tab]
[end_tabset]

https://www.ads-software.com/extend/plugins/put/