#header{
  //  background-color:#0FF;
}
.index{
   // background-color:silver;
    font-size:18px;
    margin-bottom:3px;
   // background:https://images.cnblogs.com/cnblogs_com/csharp/clock.swf;
}
.posttitle{
    color:#738;
    font-size:30px;
}