app/views/devise/registrations/new.html.erb
<header>
<h1>Sign up</h1>
</header>
<%= simple_form_for(resource, as: resource_name, url: registration_path(resource_name)) do |f| %>
<%= f.error_notification %>
<div class="form-inputs">
<%= f.input :email, required: true, autofocus: true %>
<%= f.input :password, required: true, hint: ("#{@minimum_password_length} characters minimum" if @minimum_password_length) %>
<%= f.input :password_confirmation, required: true %>
</div>
<div class="form-actions">
<%= f.button :submit, "Sign up", class: "btn btn-primary" %>
</div>
<% end %>
<%= render "devise/shared/links" %>