25%; vertical-align:top; padding:0.5em 1em 0.5em 0; border-right:1px solid lightgrey; font:16px monospace; border-top:1px solid lightgrey;">
						z-index
					</td>
					<td style="width:75%; vertical-align:top; padding:0.4em 0 0.4em 0.8em; font:20px serif; border-top:1px solid lightgrey;">
						<div style="position:relative; z-index:-1; background:green;">z-index:-1;</div>
						<div style="position:relative; z-index:0; background:green;">z-index:0;</div>
						<div style="position:relative; z-index:1; b