block-negative-3-noref2.html (289B)
1 <!DOCTYPE html> 2 <html> 3 <head> 4 <style type="text/css"> 5 html, body { 6 margin: 0; padding: 5px; 7 } 8 div { 9 height: 100px; 10 } 11 #positive, #negative { 12 background-color: green; 13 height: 20px; 14 } 15 </style> 16 </head> 17 <body> 18 <div id="positive"></div> 19 <div></div> 20 <div id="negative"></div> 21 </body> 22 </html>