Update iframe to the standalone view

src/views/preview/presentation.jsx

@@ -171,7 +171,7 @@ const PreviewPresentation = ({
                     className={classNames('admin-iframe', {
                         'modal-open': adminModalOpen
                     })}
-                    src={`/scratch2/${projectId}`}
+                    src={`/scratch2/${projectId}/adminpanel/`}
                 />
             </AdminPanel>
             { projectInfo && projectInfo.author && projectInfo.author.id && (

src/views/preview/preview.scss

@@ -42,12 +42,12 @@ $stage-width: 480px;
         z-index: 100;
         width: 252px;
         height: 100%;
-
     }
-    
+
     .admin-iframe.modal-open,
     .project-admin-panel.modal-open {
-        width: 100%
+        background-color: transparent;
+        width: 100%;
     }
 
     .project-title {