diff --git a/public/stylesheets/css/public.css b/public/stylesheets/css/public.css
index c588072dd..eaf968d8d 100644
--- a/public/stylesheets/css/public.css
+++ b/public/stylesheets/css/public.css
@@ -970,7 +970,6 @@ a.syllabusbox_a_blue{ color:#3b94d6;}
 .data_half .hw_search_box a{cursor: pointer;color: #D1D1D1}
 .data_half .hw_search_box div{border-bottom: 1px solid #eeeeee}
 .data_line{max-width: 880px}
-.pr{position: relative;}
 .new_cate{padding: 2px 5px;color: #60B25E!important;border-radius: 4px;font-size: 14px;
     position: absolute;bottom: 13px;right: 10px;}
 .data_line span{display: block;float: left;padding: 5px 10px;font-size: 14px;margin:5px 15px 5px 0px;border-radius: 4px;cursor: pointer;}
@@ -978,7 +977,7 @@ a.syllabusbox_a_blue{ color:#3b94d6;}
 .data_line a.arrary{height: 30px;line-height: 30px;font-size: 14px;margin-right: 20px;margin-top: 5px;float: left;width: 40px;color: #333}
 .data_line a.active{color:#3B94D6 }
 .send_statistic{background: #60B25E;border-radius: 4px;padding: 5px 15px;color: #FFFFFF!important;font-size: 15px}
-.data_list_item{background: #FFFFFF;margin-bottom: 10px;padding: 15px 15px;border: 1px solid #DDDDDD;display: flex}
+.data_list_item{background: #FFFFFF;margin-bottom: 10px;padding: 15px 15px;border: 1px solid #DDDDDD;display: flex;position: relative}
 .data_list_item img{border-radius: 50%;height: 50px;margin-right: 20px}
 .data_itemMain{flex: 1}
 .data_detail{text-align: justify;width: 900px;overflow: hidden;word-break: break-all;display: -webkit-box;-webkit-line-clamp: 2;-webkit-box-orient: vertical;overflow: hidden;}