Fix issue with calculator zindex

static/css/application.css

@@ -738,6 +738,8 @@ li.calc-main {
   -webkit-appearance: none; }
 li.calc-main.open {
   bottom: -36px; }
+li.calc-main.open div#calculator_wrapper form div.input-wrapper div.help-wrapper dl {
+  display: block; }
 li.calc-main a.calc {
   text-indent: -9999px;
   overflow: hidden;
@@ -869,6 +871,7 @@ li.calc-main div#calculator_wrapper form div.input-wrapper div.help-wrapper dl {
   right: -40px;
   top: -110px;
   width: 500px;
+  display: none;
   -webkit-transition-property: all;
   -moz-transition-property: all;
   -ms-transition-property: all;

templates/sass/layout/_calculator.scss

@@ -9,6 +9,10 @@ li.calc-main {
 
   &.open {
     bottom: -36px;
+
+    div#calculator_wrapper form div.input-wrapper div.help-wrapper dl {
+      display: block;
+    }
   }
 
   a.calc {
@@ -128,6 +132,7 @@ li.calc-main {
             right: -40px;
             top: -110px;
             width: 500px;
+             display: none;
             @include transition();
 
             &.shown {