anchor.diff:        <% end %>
       </tr>
       <tr>
  -      <th></th>
  +      <th class="col-lg-2 col-md-2 col-sm-2 col-xs-2 budget-table-head">
  +        Available to budget
  +      </th>
         <% @periods.each do |period| %>
           <td colspan="3"><%= period.available_to_budget_cell %></td>
         <% end %>
       </tr>
       <tr>
  -      <th class="col-lg-2 col-md-2 col-sm-2 col-xs-2 budget-table-head">
  +      <th class="budget-table-head">
           <%= link_to 'Category', categories_path %>
         </th>
         <% @periods.each do |period| %>
  
positive.code: 
  <div class="panel panel-default">
    <table class="table table-bordered budget-table">
      <tr>
        <th></th>
        <% @periods.each do |period| %>
          <th colspan="3" class="text-center budget-table-head">
  
negative.code: <% if @history.any? %>
    <div class="panel panel-default">
      <div class="panel-heading"><h3 class="panel-title">History</h3></div>
      <table class="table table-hover clickable-rows hide-overlapping">
        <% @history.each do |r| %>
          <%= presenter(r).row %>
        <% end %>
  