app/views/invites/_invite.html.erb
<div class="media">
<div class="media-body">
<% if invite.unread == true %>
<div class="media unread-invite">
<% else %>
<div class="media">
<% end %>
<%= raw invite.message %><br><span class="invite-time"><%= time_ago_in_words invite.updated_at %> ago</span>
</div>
</div>
</div>