update

src/components/study.vue

@@ -6813,6 +6813,7 @@ export default {
   line-height: 50px;
   background-image: -webkit-linear-gradient(left, #72aaf4, #4d81d5);
   cursor: pointer;
+  z-index: 999;
 }
 
 .newDialogCss {
@@ -6824,6 +6825,7 @@ export default {
   height: 60%;
   box-shadow: 0px 0 8px 0px #555555;
   border-radius: 15px;
+  z-index: 999;
 }
 
 .pzTop {
@@ -6924,6 +6926,7 @@ export default {
   height: 50%;
   box-shadow: 0px 0 8px 0px #555555;
   border-radius: 15px;
+  z-index: 999;
 }
 
 .teacherPz {

src/components/studyStudent.vue

@@ -6847,6 +6847,7 @@ export default {
   line-height: 50px;
   background-image: -webkit-linear-gradient(left, #72aaf4, #4d81d5);
   cursor: pointer;
+  z-index: 999;
 }
 
 .newDialogCss {
@@ -6858,6 +6859,7 @@ export default {
   height: 60%;
   box-shadow: 0px 0 8px 0px #555555;
   border-radius: 15px;
+  z-index: 999;
 }
 
 .pzTop {
@@ -6967,6 +6969,7 @@ export default {
   height: 50%;
   box-shadow: 0px 0 8px 0px #555555;
   border-radius: 15px;
+  z-index: 999;
 }
 
 .teacherPz {