body{
  min-height:auto;
  background-image: url('https://www.cnblogs.com/images/cnblogs_com/shifeng-/1120965/t_f07864d97d6e283f4785db236427714d.jpg');
  background-size: 50%;
  // background-position: center center;
}
#main{
  min-width:auto;
}
#blogTitle, #ad_t2, #cnblogs_c1, #under_post_news, #cnblogs_c2, #under_post_kb{
  /* 标题，广告，广告，相关博文，广告，最新新闻 */
  display:none!important;
}