diff --git a/src/views/TopBar.ts b/src/views/TopBar.ts
index 1eca124..fe952ce 100644
--- a/src/views/TopBar.ts
+++ b/src/views/TopBar.ts
@@ -148,10 +148,12 @@ export class TopBar extends Laya.Script {
     this.item_sprites.forEach((sprite: Laya.Sprite) => {
       sprite.graphics.clear()
       sprite.graphics.drawRoundRect(0, 0, sprite.width, sprite.height, 12, 12, 12, 12, "#f5f7fb")
+      sprite.alpha = 1
     })
     const sprite = this.item_sprites.get(difficulty)
     sprite.graphics.clear()
     sprite.graphics.drawRoundRect(0, 0, sprite.width, sprite.height, 12, 12, 12, 12, "#f5f7fb", "#1d5cdc", 3)
+    sprite.alpha = 1
 
     this.item_labels.forEach((label: Laya.Label) => {
       label.color = "#0e2a53"
@@ -169,6 +171,7 @@ export class TopBar extends Laya.Script {
       const sprite = Box.getChildByName("Sprite") as Laya.Sprite
       sprite.graphics.clear()
       sprite.graphics.drawRoundRect(0, 0, sprite.width, sprite.height, 12, 12, 12, 12, "#0e2a53")
+      sprite.alpha = 0.1
     }
   }
 
@@ -181,6 +184,7 @@ export class TopBar extends Laya.Script {
       const sprite = Box.getChildByName("Sprite") as Laya.Sprite
       sprite.graphics.clear()
       sprite.graphics.drawRoundRect(0, 0, sprite.width, sprite.height, 12, 12, 12, 12, "#f5f7fb")
+      sprite.alpha = 0.1
     }
   }
 }