diff --git a/src/views/course/CourseManage.vue b/src/views/course/CourseManage.vue
index ea38b5f0..c5098d9b 100644
--- a/src/views/course/CourseManage.vue
+++ b/src/views/course/CourseManage.vue
@@ -1288,7 +1288,7 @@ export default {
 };
 </script>
 
-<style lang="scss">
+<style lang="scss" scoped>
 .no-wrap {
   overflow: hidden;
   text-overflow: ellipsis;
@@ -1475,7 +1475,7 @@ export default {
   display: none; /* Chrome, Safari, Opera*/
 }
 
-.el-table .el-table__header-wrapper .el-table__header th {
+::v-deep.el-table .el-table__header-wrapper .el-table__header th {
  background: rgba(66, 132, 247, 0.1);
  color: #60769D;
 }