Tim, the hero, Webmonkey editor and resident banjo-picker.

Here is the CSS:

    
#floater {
  position: absolute;
  left: 10px;
  top: 10px;
  width: 140px;
  height: 150px;
  border: medium outset red;
}

#explain {
  position: absolute;
  left: 160px;
  top: 10px;
  width: 80%;
  height: 80%;
  border: medium dotted green;
}

#questions {
  position: absolute;
  left: 225px;
  top: 10px;
  // width: nn;
  // height: nn;
  border: thin solid blue;
}