Videos are going full width

I'm trying to get the videos to be displayed in two columns as coded below here:

<iframe src="https://www.youtube.com/embed/QiCG1vTY3kM?rel=0&controls=0" width="400" height="250" frameborder="0" allowfullscreen="allowfullscreen"><span data-mce-type="bookmark" style="display: inline-block; width: 0px; overflow: hidden; line-height: 0;" class="mce_SELRES_start"></span></iframe> <iframe src="https://www.youtube.com/embed/esmQj4MgM4k?rel=0&controls=0" width="400" height="250" frameborder="0" allowfullscreen="allowfullscreen"></iframe>

<iframe src="https://www.youtube.com/embed/UJLrQZfw92Y?rel=0&controls=0" width="400" height="250" frameborder="0" allowfullscreen="allowfullscreen"></iframe> <iframe src="https://www.youtube.com/embed/wBC2awJ0fho?rel=0&controls=0" width="400" height="250" frameborder="0" allowfullscreen="allowfullscreen"></iframe>

<iframe src="https://www.youtube.com/embed/6EHccA6KcyI?rel=0&controls=0" width="400" height="250" frameborder="0" allowfullscreen="allowfullscreen"></iframe> <iframe src="https://www.youtube.com/embed/rhjAk74kP0I?rel=0&controls=0" width="400" height="250" frameborder="0" allowfullscreen="allowfullscreen"></iframe>

<iframe src="https://www.youtube.com/embed/J046BXKznrQ?rel=0&controls=0" width="1200" height="750" frameborder="0" allowfullscreen="allowfullscreen"></iframe>

However when I view the codes the images are showing in full width. Is there some way to turn it off so Catch Responsive Pro is not making my videos full width? Thanks