<!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="height:100%;"> <head runat="server"> <title></title> </head> <body style="height:100%; padding:0;margin:0;"> <form id="form1" runat="server" style="height:100%;"> <div style="height:100%;margin:0;padding:0;background-color:Green;"> <div id="header" style="height:100px; background-color:Yellow;">header</div> <div id="menu" style="background-color:Blue;240px; float:left;display:inline;z-index:100"> <p> menu<br /> menu<br /> menu<br /> menu<br /> menu<br /> menu<br /> menu<br /> menu<br /> menu<br /> menu<br /> menu<br /> menu<br /> menu<br /> menu<br /> menu<br /> menu<br /> menu<br /> menu<br /> </p> </div> <div id="main" style="background-color:transparent;100%;margin-left:-260px;float:right;z-index:9999;"> <div style="margin-left:260px;"> 内容 </div> </div> </div> <div id="footer" style="height:20px; margin:-20px; background-color:Red;"></div> </form> </body> </html>