div+css背景层适应的问题
<!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 "      xml:lang= "zh-CN "   lang= "zh-CN ">  
  <head>  
  <meta   http-equiv= "Content-Type "   content= "text/html;   charset=gb2312 "   />  
  <title>  </title>  
  <link   href= "css.css "   rel= "stylesheet "   type= "text/css "   media= "all "   />  
  </head>  
  <style>  
 #n1                  {background:#eeeeee;width:300px} 
 #n2                  {height:400px;width:300px} 
  </style>  
  <body>  
  <div   id= "n1 ">  
  <div   id= "n2 ">  
 s <p> s <p> s <p> s <p> s <p> s <p> s <p> s <p> s <p> s <p> s <p> s <p> s <p> s <p> s <p> s <p> s <p> s <p> s <p> s <p> s <p> s <p> s <p> s <p> s <p> s <p> s <p> s <p> s <p> s <p>  
  </div>  
  </div>  
  </body>  
  </html>    
 因为n2层设计时需设定高度,但当内容超过设定高度时! 
 在IE中n1层能适应n2层高度,FF就不能了,如何解决!?
------解决方案--------------------针对ff,设定min-height,对ie设定height