1<html> 2 <body> 3 <iframe src="visible_iframe.html"></iframe> 4 <iframe width=0 height=0 src="zero_sized_iframe.html"></iframe> 5 <iframe style="visibility:hidden;" src="invisible_iframe.html"></iframe> 6 <p>This is a visible paragraph.</p> 7 <p style="visibility:hidden;">This is an invisible paragraph.</p> 8 </body> 9</html> 10