   <mspace width="25px" height="100px" style="background: green"/>
      </math>
      <math style="position: absolute; top: 0px; left: 0px">
        <mspace width="100px" height="20px" depth="20px" style="background: red"/>
        <mspace width="50px" height="100px" style="background: red"/>
        <mspace width="50px" depth="100px" style="background: red"/>
      </math>
    </div>
    <!-- These green divs should cover the red mspace elements -->
    <div style="position: absolute; top: 0px; left: 0px;