diff --git a/teachers.html b/teachers.html
index b30e426b8d..80063251f5 100644
--- a/teachers.html
+++ b/teachers.html
@@ -6,7 +6,7 @@
   <base href="//webapi.amap.com/ui/1.1/ui/misc/PositionPicker/examples/" />
   <meta charset="utf-8">
   <meta name="viewport" content="initial-scale=1.0, user-scalable=no, width=device-width">
-  <title>拖拽选址</title> 
+  <title>拖拽选址</title>
   <style>
     html,
     body {