diff --git a/src/index.less b/src/index.less
index 4474e58..f076ca3 100644
--- a/src/index.less
+++ b/src/index.less
@@ -463,3 +463,9 @@ textarea.ant-input {
 .tree-num {
   color: rgba(0, 0, 0, 0.45);
 }
+
+.ant-tabs {
+  .ant-tabs-tab {
+    padding: 12px 24px !important;
+  }
+}
diff --git a/src/pages/course/index.tsx b/src/pages/course/index.tsx
index cb9fe31..0d00953 100644
--- a/src/pages/course/index.tsx
+++ b/src/pages/course/index.tsx
@@ -221,7 +221,7 @@ export const CoursePage = () => {
     <>
       <div className="tree-main-body">
         <div className="left-box">
-          <Tabs defaultActiveKey="1" items={items} onChange={onChange} />
+          <Tabs defaultActiveKey="1" centered items={items} onChange={onChange} />
         </div>
 
         <div className="right-box">