diff --git a/index.html b/index.html
index cf6ca30..d8f0310 100644
--- a/index.html
+++ b/index.html
@@ -11,6 +11,8 @@
 <link href="installer.css?t=1" rel="stylesheet">
 </head>
 <body id="installer" class="text-center">
+<div class="container-fluid">
+<div class="col-md-12">
 <form class="form-install" action="install.php" method="post">
 
 <div class="row">
@@ -136,10 +138,10 @@
     </div>
 </div>
 
-
-
 <button class="btn btn-lg btn-primary btn-block" type="submit">Start install</button>
 </form>
+</div>
+</div>
 
 <!-- Optional JavaScript -->
 <!-- jQuery first, then Popper.js, then Bootstrap JS -->
diff --git a/install.php b/install.php
index 954e166..f9c8059 100644
--- a/install.php
+++ b/install.php
@@ -17,8 +17,6 @@ else {
 	putenv('LOCAL_PROXY=no');
 }
 
-
-
 // TODO - js warning
 //if [ "$SMARTHOST_PROXY" == "no" ]; then
 //	echo "Warning! Local proxy will not work without smarthost proxy service.";
@@ -42,4 +40,8 @@ putenv('DISCOVERY='.$_POST["discovery"]);
 
 putenv('ADDITIONAL='.$_POST["additional"]);
 
+// check ENV variables
+$output = shell_exec("set");
+echo $output;
+
 ?>
