app/views/affiliates/new.html.erb
<div class="row">
<div class="col-md-12">
<h1 class="text-center">
New Affiliate
</h1>
</div>
</div>
<div class="row">
<div class="col-md-6 col-md-offset-3">
<hr>
<%= simple_form_for :affiliate, url: affiliates_path do |f| %>
<%= render partial: 'form', locals: {f: f} %>
<% end %>
</div>
</div>