<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd"> <html xmlns="http://www.w3.org/1999/xhtml"> <style type="text/css"> <!--设置DIV块的边界为5px--> div{margin:5px;border:0;padding:0;} #Box1{ width:200px; height:72px; background-color:#666; } #Box2{ width:200px; height:72px; background-color:#F0F; } </style> <head> <meta http-equiv="Content-Type" content="text/html; charset=utf-8" /> <title>让上下两个DIV块之间有一定距离或没有距离</title> </head> <body> <div id="Box1"></div> <div id="Box2"></div> </body> </html>