update to use pure js to fix the coupin image. code review by XWG

@@ -18,12 +18,13 @@ var page = 1,
 var conponTmpl = Handlebars.compile($('#tmpl-coupon').html()),
     $newCoupon = $('#new-coupon');
 
+var winH = $(window).height();
+
 // conponNotAvaliableTmpl = Handlebars.compile($('#tmpl-coupon-not-avaliable').html()),
 
 function fixedLayOut() {
-    var $null = $('.null');
-
-    var winH = $(window).height(),
+    var $null = $('.null'),
+        navH = $('.nav-title').height(),
         nullH = $null.height();
 
     if ($null.length === 0) {
@@ -31,7 +32,7 @@ function fixedLayOut() {
     }
 
     $null.css({
-        top: winH / 2 - nullH / 2
+        top: winH / 2 - nullH / 2 + navH
     });
 }
 

@@ -83,7 +83,7 @@
     		position: absolute;
     		left: 0;
     		top:50%;
-    		//@include transform(translateY(-50%));
+    		@include transform(translateY(-50%));
     		i{
     			width: 100%;
     			height: 120rem / $pxConvertRem;