block-em-length-1-ref.html (341B)
1 <!DOCTYPE html> 2 <html> 3 <head> 4 <style type="text/css"> 5 body { 6 font-size: 20px; 7 } 8 #block1 { 9 height: 20px; 10 background-color: blue; 11 } 12 #spacer { 13 font-size: 50px; 14 height: 5em; 15 } 16 #block2 { 17 height: 20px; 18 background-color: blue; 19 } 20 </style> 21 </head> 22 <body> 23 <div id="block1"></div> 24 <div id="spacer"></div> 25 <div id="block2"></div> 26 </body> 27 </html>