CSS Floated divs are overlapping on window resize. How do I stop this?

Question

I have just re-done my website at www.chartoonz.com

I have created a wrapper div in which I have placed a div with a links to my videos on vimeo. I float this div left, next to it I have floated a div with some text about the movie and floated it right. The columns look ok, until the window resizes. Then they overlap terrribly and I cannot figure out why. In the event of a narrow window resize, I want the right float column to jump underneath the left floated column.

The relevant HTML looks like this:

<div id="CopyWrapper" >

        <div class = "copyFloatLeft">
        <p><strong>Use Video to Communicate.</strong></p>
        <p><iframe src="//player.vimeo.com/video/90334225" width="500" height="281" frameborder="0" webkitallowfullscreen mozallowfullscreen allowfullscreen></iframe></p>
        <br />
        </p>
        <br /><br />
    </div>
    <div class = "copyFloatRight">
            <strong>Corporate Communications</strong> 
            <p> Corporate communications can be greatly enhanced through a well presented video. Ideas and concepts are easier to understand when they can be seen clearly and their meaning is made plain. Here, I present some of the work I did over the last few months, helping the Merrill Lynch digital advertising division get their message out.</p>
    </div>

    <br /> 
</div>
<br class="clearFloat" />

The governing CSS looks like this:

#CopyWrapper{
background: center;
text-align: left;
display: block;
float: left;
width: 65%;
padding-left: 200px;
position: relative;
margin: 0 auto;
clear: both;
overflow: hidden;
}


.copyFloatLeft{
background: center;
width: 45%;
margin:5px;
padding: 15px 15px 5px 15px;
position: relative;
clear: right;
float: left;
display: block;
}



.copyFloatRight{
background: center;
width: 45%;
margin:5px;
padding: 15px 15px 5px 15px;
position: relative;
clear: right;
float: right;
display: block;

}

Any help would be appreciated.

Aharon

Answer 1

.copyFloatLeft and .copyFloatRight blocks should both float to the left

and for the iframes I would do something like:

#CopyWrapper iframe {
    width: 100%;
}