app/views/steps/index.html.erb
<% content_for :header_title, 'Navigation' %>
<div class="slab">
<% current_application.class.step_navigation.sections.each do |section, steps| %>
<h3>
<%= section %>
</h3>
<% steps.each do |step| %>
<div>
<%= link_to step.to_param.titleize,
decoded_step_path(step: step),
class: 'button button--small button--full-mobile' %>
</div>
<% end %>
<% end %>
</div>