diff --git a/service2.js b/service2.js
index 0914204..e51c13a 100644
--- a/service2.js
+++ b/service2.js
@@ -1475,7 +1475,7 @@ class BesPopup extends HTMLElement {
     } else if (this.offsetWidth <= x) {
       this.style.left = `${x - this.offsetWidth}px`
     } else {
-      this.style.left = `${x - this.offsetWidth / 2}px`
+      this.style.left = `${(window.innerWidth - this.offsetWidth) / 2}px`
     }
 
     if (y + 20 + this.offsetHeight <= window.innerHeight) {
@@ -1483,7 +1483,7 @@ class BesPopup extends HTMLElement {
     } else if (this.offsetHeight <= y) {
       this.style.top = `${y - this.offsetHeight}px`
     } else {
-      this.style.top = `${y - this.offsetHeight / 2}px`
+      this.style.top = `${(window.innerHeight - this.offsetHeight) / 2}px`
     }
   }