ht margin of 25 pixels.
</P>
<P class="three">
This sentence should have a right margin of 5 em.
</P>
<P class="four">
This sentence should have a right margin of 25%, which is calculated with respect to the width of the parent element.
</P>
<UL class="two" style="background-color: gray;">
<LI>The right margin on this unordered list has been set to 25 pixels, and the background color has been set to gray.</LI>
<LI class="two" style="background-color: white;">Another list item might not be such a bad idea, e