body{
   background-color:pink;
}

#title{
   font-size:18px;
   color:green;
   font-family:微软雅黑;
}
#nav{
  width:100%;
}

#masthead{
  width:100%;
  background-image:url(https://image.tianjimedia.com/uploadImages/2011/350/Q6M96857HI08.jpg);
}

#navbar{
 width:100%;
}

#navbar li{
  padding:10px 15px;
}
#content{
  width:1124px;
  margin:0 auto;
}