block-first-child-1a.html (313B)
1 <!DOCTYPE html> 2 <html> 3 <head> 4 <style type="text/css"> 5 #separator, #first-child { 6 height: 20px; 7 background-color: green; 8 } 9 #parent { 10 margin-top: 10px; 11 } 12 #first-child { 13 margin-top: 20px; 14 } 15 </style> 16 </head> 17 <body> 18 <div id="separator"></div> 19 <div id="parent"> 20 <div id="first-child"></div> 21 </div> 22 </body> 23 </html>