em" style="background: black"/>
      </mroot>
    </math>
  </p>
  <hr/>
  <p>
    <math style="font-family: extraascender3000-rulethickness1000;">
      <msqrt style="background: green" id="radical0031">
        <mspace id="base0031" width="3em" height="1em" style="background: blue"/>
      </msqrt>
      <mroot style="background: green" id="radical0032">
        <mspace id="base0032" width="3em" height="1em" style="background: blue"/>
        <mspace width="3em" height="1em" style="background: black"/>
 