diff --git a/index.html b/index.html
index 3100bf6..dc8deb8 100644
--- a/index.html
+++ b/index.html
@@ -1,17 +1,18 @@
 <!DOCTYPE HTML>
-<html>
+<html lang="en">
 <head>
     <meta http-equiv="Content-Type" content="text/html; charset=utf-8"/>
+    <meta name="viewport" content="width=device-width, initial-scale=1"/>
     <title>Payment request</title>
     <script type="text/javascript" charset="utf-8" src="vendor/jquery-3.4.1.min.js"></script>
     <script type="text/javascript" src="vendor/jquery-ui.min.js"></script>
     <script type="text/javascript" src="vendor/qrcode.js"></script>
     <link rel="stylesheet" type="text/css"
           href="vendor/jquery-ui-themes-1.12.1/themes/ui-lightness/jquery-ui.css">
-    <style type="text/css">
+    <style>
 
       body {
-	  font-family: Arial;
+	  font-family: Arial, sans-serif;
       }
 
       .tab {
@@ -57,6 +58,7 @@
 	  background-color:#ccc;
 	  border-radius: 5px;
 	  padding:10px;
+      margin-top: 5px;
       }
       #payreq{
 	  overflow-wrap: break-word;
