diff --git a/src/index.less b/src/index.less
index 987b30f..354b785 100644
--- a/src/index.less
+++ b/src/index.less
@@ -557,7 +557,7 @@ textarea.ant-input {
   .ant-tabs-tab {
     font-size: 16px !important;
     font-weight: 500;
-    padding: 10px 24px !important;
+    padding: 10px 30px !important;
     .ant-tabs-tab-btn {
       line-height: 20px;
     }
diff --git a/src/pages/course/index.tsx b/src/pages/course/index.tsx
index 3788dc0..1b48cc9 100644
--- a/src/pages/course/index.tsx
+++ b/src/pages/course/index.tsx
@@ -335,7 +335,12 @@ 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">
           <div className="playedu-main-title float-left mb-24">