app/views/lcms/engine/shared/_flash.html.erb
<%= yield(:above_flash) if content_for?(:above_flash) %>
<% flash.to_hash.slice('alert', 'notice').each do |name, message| %>
<% if message.present? %>
<% klass = name == 'alert' ? 'alert' : 'success' %>
<div class='callout <%= klass %>' data-closable>
<%= raw message %>
<button aria-label='Dismiss alert' class=close-button data-close type=button>
<span aria-hidden=true>×</span>
</button>
</div>
<% end %>
<% end %>