[DJMaze]

You must use 'em' and percentual placements.

use em for correct sizing based on the user prefered text size.

td {
    height: 1em;
}

precentual placement

div {
  left: 40%;
  width: 20%;
}

or

div {
  float: left;
  margin-left: 20%;
}

example: http://dragonflycms.com/