diff --git a/src/component/dropdown/index.less b/src/component/dropdown/index.less
index 5a32b931..b1edd7f8 100644
--- a/src/component/dropdown/index.less
+++ b/src/component/dropdown/index.less
@@ -15,6 +15,7 @@
   background-color: #fff;
   box-sizing: border-box;
   border: 1px solid #e4e7ed;
+  border-radius: 2px;
   box-shadow: 0 2px 12px 0 rgba(0, 0, 0, .1);
 }
 
diff --git a/src/component/transition/index.ts b/src/component/transition/index.ts
index 389b5c17..5511c18f 100644
--- a/src/component/transition/index.ts
+++ b/src/component/transition/index.ts
@@ -5,4 +5,4 @@ Component.install = (app: App) => {
   app.component(Component.name, Component);
 };
 
-export default Component;
\ No newline at end of file
+export default Component;
diff --git a/src/index.ts b/src/index.ts
index afc77b21..dc2c3513 100644
--- a/src/index.ts
+++ b/src/index.ts
@@ -159,7 +159,7 @@ const components: Record<string, Component> = {
   LayConfigProvider,
   LayDatePicker,
   LayNoticeBar,
-  LayTransition
+  LayTransition,
 };
 
 const install = (app: App, options?: InstallOptions): void => {
@@ -246,7 +246,7 @@ export {
   LayConfigProvider,
   LayDatePicker,
   LayNoticeBar,
-  LayTransition
+  LayTransition,
 };
 
 export { layer };