app/views/layouts/activities_page.html.erb
<!DOCTYPE html>
<html>
<head>
<meta charset="utf-8">
<%= stylesheet_link_tag "activities" %>
<%= javascript_include_tag "activities" %>
<title>Activity Page</title>
</head>
<body>
<h1>User Activity in Species+</h1>
<%= yield%>
</body>
</html>