Added demo application for horizontal form

demo/app/views/users/_form.html.erb

@@ -2,4 +2,10 @@
   <%= render partial: "users/form_without_bootstrap_helpers" %>
 <% end %>
 
-<%= render partial: "users/vertical_form" %>
+<% if false %>
+  <%= render partial: "users/vertical_form" %>
+<% end %>
+
+<% if true %>
+  <%= render partial: "users/horizontal_form" %>
+<% end %>

demo/app/views/users/_horizontal_form.html.erb

@@ -0,0 +1,33 @@
+<div class="card card-primary my-3">
+  <div class="card-header fw-bold">
+    Profile Form (Horizontal layout)
+  </div>
+  <div class="card-body">
+    <%= bootstrap_form_for @user, bootstrap_form: {layout: :horizontal} do |form| %>
+      <%= form.text_field :name, autocomplete: "new-name", bootstrap_form: {prepend: "$", append: "0.0"} %>
+      <%= form.text_field :email, autocomplete: "new-email", bootstrap_form: {} %>
+      <%= form.text_field :password, autocomplete: "new-password" %>
+      <%= form.phone_field :mobile_number %>
+      <%= form.date_field :birth_date %>
+      <%= form.check_box :terms, bootstrap_form: {switch: false}, required: true %>
+      <%= form.radio_button :terms, bootstrap_form: {switch: false}, required: true %>
+      <%= form.range_field :excellence %>
+      <%= form.url_field :blog_url %>
+      <%= form.collection_radio_buttons :fruit_id, ::Fruit.all, :id, :name, {bootstrap_form: {inline: true}, checked: form.object.fruit_id} %>
+      <%= form.color_field :favorite_color %>
+      <%= form.collection_check_boxes :skill_ids, ::Skill.all, :id, :name, {bootstrap_form: {inline: true}} %>
+      <%= form.fields_for :address, include_id: false, bootstrap_form: {layout: :horizontal} do |address_form| %>
+        <%= address_form.text_area :street %>
+        <%= address_form.text_field :state %>
+        <%= address_form.grouped_collection_select :city, ::Country.includes(:cities), :cities, :name, :id, :name, {include_blank: "Select city"} %>
+        <%= address_form.text_field :postal_code %>
+        <%= address_form.select :country_id, options_for_select(::Country.pluck(:name, :id), address_form.object.country_id),
+            {include_blank: "Select Country", bootstrap_form: {}} %>
+      <% end %>
+      <div class="mt-3">
+        <%= form.submit "Register", class: "btn btn-primary" %>
+        <%= link_to "Cancel", users_path, class: "btn btn-secondary" %>
+      </div>
+    <% end %>
+  </div>
+</div>