app/views/contacts/_form.html.haml
= simple_form_for [resource, resource.contacts.new(newsletter: true)] do |f|
= f.text_field :email, placeholder: "Email", class: "full-width form-control"
%hr.space-xs
= f.text_area :message, rows: 3, placeholder: "Escribe tu mensaje aquí...", class: "full-width form-control"
%hr.space-xs
%small.text-muted
= legal_text
%br
= f.check_box :newsletter
%label#contact-newsletter-label{for: "contact_newsletter"} Recibir artículos deportivos interesantes
%hr.space-xs
= f.button :submit, class: "btn-primary btn-block"
.clearfix