diff --git a/src/views/courselibrary/CoursewareManage.vue b/src/views/courselibrary/CoursewareManage.vue
index adb2c537..00fbe135 100644
--- a/src/views/courselibrary/CoursewareManage.vue
+++ b/src/views/courselibrary/CoursewareManage.vue
@@ -1361,6 +1361,7 @@
       :closable="closableQR"
       wrapClassName="QRModal"
       style="margin-top: 400px"
+      :zIndex="9999"
       @cancel="qr_exit"
     >
       <div class="QR" :style="{ display: QR_hs ? 'block' : 'none' }">
@@ -1403,6 +1404,7 @@
       :closable="closableQR"
       wrapClassName="recgradeModal"
       style="margin-top: 400px"
+      :zIndex="9999"
       @cancel="rg_exit"
     >
       <div class="recordgrade" :style="{ display: rg_hs ? 'block' : 'none' }">
@@ -1453,6 +1455,7 @@
       :closable="closableQR"
       wrapClassName="graModal"
       style="margin-top: 400px"
+      :zIndex="9999"
       @cancel="graduate_exit"
     >
       <div
@@ -1560,6 +1563,7 @@
       :closable="closableQR"
       wrapClassName="DelModal"
       style="margin-top: 400px"
+      :zIndex="9999"
       @cancel="delete_exit"
     >
       <div
@@ -3900,7 +3904,6 @@ export default defineComponent({
         }
         .onlinemanage {
           display: none;
-          z-index: 999;
           min-width: 1000px;
           background: #ffffff;
           .om_main {
@@ -4338,7 +4341,6 @@ export default defineComponent({
           }
         }
         .givepower {
-          z-index: 999;
           min-width: 1000px;
           background: #ffffff;
           .gp_main {
@@ -4455,7 +4457,6 @@ export default defineComponent({
           }
         }
         .schooltime {
-          z-index: 999;
           min-width: 1000px;
           background: #ffffff;
           .st_main {
@@ -4677,7 +4678,6 @@ export default defineComponent({
           }
         }
         .studentsmanage {
-          z-index: 1000;
           min-width: 1000px;
           background: #ffffff;
           .stm_main {
@@ -4923,7 +4923,6 @@ export default defineComponent({
         }
         .modalMain {
           .ftsturecord {
-            z-index: 999;
             min-width: 1000px;
             background: #ffffff;
             .ftsr_main {
@@ -4965,7 +4964,6 @@ export default defineComponent({
       width: 424px !important;
       .ant-modal-body {
         .delete {
-          z-index: 99999;
           width: 424px;
           background: #ffffff;
           box-shadow: 0px 1px 35px 0px rgba(118, 136, 166, 0.21);