style:助学工具考试列表样式调整

src/modules/teach-tool/examination-manager/index.less

@@ -18,4 +18,8 @@
       background: #fafafa;
       background: #fafafa;
     }
     }
   }
   }
+  .ant-table-wrapper {
+    max-height: calc(100vh - 280px);
+    overflow: scroll;
+  }
 }
 }