diff --git a/Packages/viewerbase/client/components/basic/hidingPanel/hidingPanel.js b/Packages/viewerbase/client/components/basic/hidingPanel/hidingPanel.js
index a09948028..29fcae438 100644
--- a/Packages/viewerbase/client/components/basic/hidingPanel/hidingPanel.js
+++ b/Packages/viewerbase/client/components/basic/hidingPanel/hidingPanel.js
@@ -12,10 +12,10 @@ Template.hidingPanel.events({
             template.hidingPanelOpen.set(true);
 
             // Rotate Arrow Icon
-            $('.arrowIcon').toggleClass("arrowIconRotate");
+            $('.arrowIcon').css( {'transform': 'rotate(180deg)'});
 
             // Set panel content opacity
-            $(".hidingPanelContent").toggleClass("hidingPanelContentOpaque");
+            $(".hidingPanelContent").css("opacity", "1");
         }
     },
 
@@ -31,10 +31,10 @@ Template.hidingPanel.events({
             template.hidingPanelOpen.set(false);
 
             // Rotate Arrow Icon
-            $('.arrowIcon').toggleClass("arrowIconRotate");
+            $('.arrowIcon').css( {'transform': 'rotate(0deg)'});
 
             // Set panel content opacity
-            $(".hidingPanelContent").toggleClass("hidingPanelContentOpaque");
+            $(".hidingPanelContent").css("opacity", "0");
 
         }
     },
diff --git a/Packages/viewerbase/client/components/basic/hidingPanel/hidingPanel.styl b/Packages/viewerbase/client/components/basic/hidingPanel/hidingPanel.styl
index f5ece37ca..a955c7871 100644
--- a/Packages/viewerbase/client/components/basic/hidingPanel/hidingPanel.styl
+++ b/Packages/viewerbase/client/components/basic/hidingPanel/hidingPanel.styl
@@ -1,5 +1,5 @@
 
-.hidingPanel, .hidingPanelContent, .studyBrowserContainer, .arrowIcon, .arrowIconRotate, .hidingPanelContentOpaque
+.hidingPanel, .hidingPanelContent, .studyBrowserContainer, .arrowIcon, .arrowIconRotate
 
   -o-transition: all 0.3s ease-out
   -ms-transition: all 0.3s ease-out
@@ -77,7 +77,4 @@
         color: #FFFFFF
 
       .pinInactive
-        color: #424242
-
-  .hidingPanelContentOpaque
-    opacity: 1;
\ No newline at end of file
+        color: #424242
\ No newline at end of file