/* 导航栏显示当前位置 */
.menu li:nth-child(5) .bor_bottom{ display: block;}
.nav_wrap{}
.side_window{display: none;}
.sm_nav{border-bottom: none;}

.abstract{line-height: 24px; color:#ff6f00; font-size: 14px; background: #f2f2f2; padding: 18px 15px 10px; margin-bottom: 30px;}
.abstract span{color: #666}
.article_middle{background: #f5f5f5;}