fix: removed data- from attributes

Author: frankpagan

demo/index.html

@@ -67,7 +67,7 @@ <h3 style="text-align:center;">Parallax Demo</h3>
 
   	</div>
 
-  	<div id="menuL" class="cocreate-sidenav bg-medium-light-gray" data-main_content="content" sidenav_default_desktop="offCanvas" sidenav_default_tablet="offCanvas">
+  	<div id="menuL" class="cocreate-sidenav bg-medium-light-gray" content_id="content" sidenav_default_desktop="offCanvas" sidenav_default_tablet="offCanvas">
 
 		    <div resize="right"></div>
     </div>