anchor.diff:      </div>
   
       <div class='col-md-3'>
  -      <div class='panel panel-default'>
  -        <div class='panel-heading'><%= t '.headers.activity' %></div>
  -        <ul class='list-group'>
  +      <div class='card'>
  +        <div class='card-header'><%= t '.headers.activity' %></div>
  +        <ul class='list-group list-group-flush'>
             <% unless current_user.last_sign_in_at.nil? %>
               <li class='list-group-item'>
                 <span><%= User.human_attribute_name(:last_sign_in_at) %>: </span>
  
positive.code:         </ul>
        </div>
  
        <%= link_to self_edit_users_path, class: 'btn btn-primary' do %>
          <%= icon 'edit', t('.edit') %>
        <% end %>
  
  
negative.code: <div class='container-fluid'>
    <h3 class='pt-4'><%= t '.title' %></h3>
    <div class='row'>
  
      <div class='col-md-9'>
        <div class='card'>
          <div class='card-header'><%= t '.headers.details' %></div>
          <ul class='list-group list-group-flush'>
            <li class='list-group-item'>
              <span><%= User.human_attribute_name(:username) %>: </span>
              <strong><%= current_user.username %></strong>
  