diff --git a/src/components/AiFixedBtn.vue b/src/components/AiFixedBtn.vue
index a6799e03..a28bd9fd 100644
--- a/src/components/AiFixedBtn.vue
+++ b/src/components/AiFixedBtn.vue
@@ -22,8 +22,8 @@ export default {
   position: fixed;
   left: 0;
   top: 0;
-  width: 100%;
-  height: 100%;
+  width: 100vw;
+  height: 100vh;
   pointer-events: none;
   z-index: 999;