Base Simple_form form rails layout

default-simple_form-layout.rb

<%= simple_form_for(@listing) do |f| %>
  <%= f.error_notification %>

  <div class="form-inputs">
    <%= f.input :listing_title, hint: '<strong>Pick a descriptive title to really sell your place!</strong>', input_html: { class: 'span7' }, label: 'Listing Title'  %>
  	<%= f.input :listing_description, as: :text, input_html: { class: 'span7' } %>
  	<%= f.input :listing_roomate_count, collection: 1..5, label: 'How Many Roomates?', prompt: 'Choose' %>
<!-- This is a default value of USA and can be switched later when expanding more countries -->
  	<%= f.hidden_field :country_id, value: '236' %>
  	<%= f.input :state_id, collection: @states, label_method: :name, value_method: :id, prompt: 'State' %>
  	<%= f.input :address1, input_html: { class: 'span7' }, label: 'Street Address 1'  %>
  	<%= f.input :address2, input_html: { class: 'span7' }, label: 'Street Address 1'  %>
  	<%= f.input :listing_city, input_html: {class: 'span7'}, label: 'City' %>
  	<%= f.input :college_id, collection: @colleges, label_method: :name, value_method: :id, prompt: 'Nearby College?', hint: 'Choose a local college, this improves your candidates!' %>
  	<%= f.input :listing_rent, input_html: {class: 'span4'}, label: 'Rent per roomate in dollars' %>
  	<%= f.input :listing_expiration, input_html: {class: 'span7'}, label: 'Listing Expires' %>
  </div>

    <%= f.button :submit , :class => 'btn btn-medium btn-success', value: 'Post It!' %>
<% end %>