div on top of iframe

Super simple stuff..

put an iframe, and a header div inside one container div.

set position:relative on the container, and position:absolute and top:0 on the header div.

that should do it.

HTML:

<div class="holder">
   <div class="bar"></div>
   <iframe class="frame"></iframe>
</div>​

CSS:

.holder{
    width: 400px;
    height: 300px;
    position: relative;
}

.frame{
    width: 100%;
    height: 100%;
}

.bar{
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 40px;
}

fiddle

The concept of Rodik answer is good but the implementation is buggy.

1. put an iframe, and a header div inside one container div.

2. set position:relative on the container, and position:absolute and top:0 on the header div.

http://jsfiddle.net/eayr9pup/2/

.holder {
  width: 400px;
  height: 300px;
  position: relative
}

.frame {
  width: 100%;
  height: 100%;
  background-color: blue;
}

.bar {
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 40px;
  background-color: red;
}

<div class="holder">
  <iframe class="frame"></iframe>
  <div class="bar"></div>
</div>