fix

src/student/leaderboard/index.module.less

@@ -37,7 +37,8 @@
   padding: 12px;
   border-radius: 12px;
   background-color: #fff;
-  min-height: 90%;
+  min-height: 100%;
+  box-sizing: border-box;
 }
 .item {
   display: flex;

src/teacher/leaderboard/index.module.less

@@ -36,7 +36,8 @@
   padding: 12px;
   border-radius: 12px;
   background-color: #fff;
-  min-height: 90%;
+  min-height: 100%;
+  box-sizing: border-box;
 }
 .item {
   display: flex;