app/views/layouts/application.html.erb
<!DOCTYPE html>
<html>
<head>
<title>OpenWS</title>
<link rel="stylesheet" href="//cdnjs.cloudflare.com/ajax/libs/semantic-ui/2.2.2/semantic.min.css"></link>
<%= stylesheet_link_tag 'application', media: 'all', 'data-turbolinks-track' => true %>
<%= csrf_meta_tags %>
</head>
<body>
<div class="ui container">
<%= yield %>
</div>
<%= javascript_include_tag *webpack_asset_paths("application") %>
</body>
</html>