diff --git a/index.html b/index.html
index 509d876..2151a84 100644
--- a/index.html
+++ b/index.html
@@ -3,7 +3,7 @@
 <html lang="en">
 <head>
 
-<meta name="viewport" content="width=device-width,initial-scale=1.0,user-scalable=no">
+<meta name="viewport" content="width=device-width,initial-scale=1.0, minimum-scale=0.1, maximum-scale=2.0, user-scalable=no"/>
     <meta charset="utf-8">
     <title>智能节水净水花盆</title>
     <link rel="stylesheet" type="text/css" href="css.css">
