scinote-web/app/views/user_notifications/_list.html.erb

<% @notifications.each do |notification| %>
  <li class="notification <%= 'unseen' unless notification.already_seen(current_user) %>">
    <div class="row">
      <div class="col-xs-3 col-md-1">
        <span style="display: none;" data-hook="user-notification-list-item"></span>
        <%= render partial: "user_notifications/icons/#{notification.type_of}",
                   locals: {notification: notification},
                   formats: [:html] %>
      </div>
      <div class="col-xs-9 col-md-11">
        <strong><%= sanitize_input(notification.title) %></strong> <br>
        <%= l(notification.created_at, format: :full) %> | <%= sanitize_input(notification.message) %>
      </div>
    </div>
  </li>
<% end %>