Merge branch 'beta' of https://git.cocorobo.cn/CocoRoboLabs/pbl-student-table into beta

src/components/easy2/studyStudent.vue

@@ -17973,7 +17973,7 @@ export default {
 
 .student_head {
   width: 100%;
-  margin: 0 auto;
+  margin: 20px auto 0;
   padding-bottom: 20px;
   display: flex;
   flex-direction: column;

src/components/easy3/studyStudent.vue

@@ -17839,7 +17839,7 @@ export default {
 
 .student_head {
   width: 100%;
-  margin: 40px auto 0;
+  margin: 20px auto 0;
   padding-bottom: 20px;
   display: flex;
   flex-direction: column;

src/components/studyStudent.vue

@@ -16944,7 +16944,7 @@ export default {
 
 .student_head {
   width: 100%;
-  margin: 0 auto;
+  margin: 20px auto 0;
   padding-bottom: 20px;
   display: flex;
   flex-direction: column;