diff --git a/css/details.css b/css/details.css
index e4c6752..5ae03c2 100644
--- a/css/details.css
+++ b/css/details.css
@@ -252,7 +252,7 @@
   width: 130px;
   height: 136px;
 }
-.boxbox .details .right .admission-btn .item .btn .min-QRcode .min-QRcode {
+.boxbox .details .right .admission-btn .item .btn .min-QRcode .min-QRcode-img {
   width: 100px;
   height: 100px;
   position: absolute;
diff --git a/css/details.less b/css/details.less
index ab845d1..4e6f993 100644
--- a/css/details.less
+++ b/css/details.less
@@ -288,7 +288,7 @@
                                 height: 136px;
                             }
 
-                            .min-QRcode {
+                            .min-QRcode-img {
                                 width: 100px;
                                 height: 100px;
                                 position: absolute;