app/cells/decidim/comparative_stats/metric_timelines/show.erb
<div class="row">
<% metrics.each do |name, metric| %>
<div class="column" style="padding: 1em">
<div class="card">
<div class="card-divider">
<%= title name %>
</div>
<div class="card-section">
<%= line_chart metric, id: "line_chart_#{name}" %>
</div>
</div>
</div>
<% end %>
</div>