.postBody blockquote{
  border: none;
  padding: 0 1em;
  color: #6a737d;
  border-left: 0.25em solid #dfe2e5;
  /*隐去默认的引号图片*/
  background: none;    
  /*覆盖默认90%*/
  width: 100%; 
}

#ad_t2, #cnblogs_c1, #under_post_news, #cnblogs_c2, #under_post_kb {
    display: none;
}