anchor.diff:            <td><%= meter.meter_type.humanize %></td>
             <td>
               <div class="btn-group">
  -              <%= link_to 'Delete', school_meter_path(@school, meter), method: :delete, data: { confirm: 'Are you sure?' }, class: 'btn btn-danger' %>
  -              <%= link_to 'Activate', activate_school_meter_path(@school, meter), method: :put, class: 'btn btn-success' %>
  +              <%= link_to 'Delete', school_meter_path(@school, meter), method: :delete, data: { confirm: 'Are you sure?' }, class: 'btn btn-sm btn-danger' %>
  +              <%= link_to 'Activate', activate_school_meter_path(@school, meter), method: :put, class: 'btn btn-sm btn-success' %>
               </div>
             </td>
           </tr>
  
positive.code: <h1>Manage meters: <%= @school.name %></h1>
  
  <table class="table table-striped">
    <thead>
      <tr>
        <th>Meter Point Number</th>
  
negative.code:   <% end %>
  </table>
  
  <div class="card bg-light mb-3">
    <div class="card-header"><h4>New meter</h4></div>
    <div class="card-body">
      <%= render 'form', school: @school, meter: @new_meter %>
    </div>
  </div>
  
  