Share styles between pet types and alt styles as "rainbow-pool" CSS

app/assets/stylesheets/alt_styles/index.sass

@@ -1,15 +1,3 @@
-.filters
-	fieldset
-		display: flex
-		flex-direction: row
-		align-items: center
-		justify-content: center
-		gap: .5em
-
-	legend
-		display: contents
-		font-weight: bold
-
 .alt-styles-header
 	margin-top: 1em
 	margin-bottom: .5em

app/assets/stylesheets/application/rainbow-pool.sass

@@ -0,0 +1,11 @@
+.rainbow-pool-filters
+	fieldset
+		display: flex
+		flex-direction: row
+		align-items: center
+		justify-content: center
+		gap: .5em
+
+	legend
+		display: contents
+		font-weight: bold

app/assets/stylesheets/pet_types/index.sass

@@ -1,17 +1,5 @@
 @import "../partials/clean/constants"
 
-.pet-filters
-	fieldset
-		display: flex
-		flex-direction: row
-		align-items: center
-		justify-content: center
-		gap: .5em
-
-	legend
-		display: contents
-		font-weight: bold
-
 [role=navigation]
 	margin-block: .5em
 	text-align: center

app/views/alt_styles/index.html.haml

@@ -14,7 +14,8 @@
 	wearable items, there's not a great way for us to get style tokens onto
 	tradelists… this may change someday, but probably not soon, sorry!
 
-= form_with url: alt_styles_path, method: :get, class: "filters" do |f|
+= form_with url: alt_styles_path, method: :get,
+            class: "rainbow-pool-filters" do |f|
 	%fieldset
 		%legend Filter by:
 		= f.select :color, Color.order(:name).map(&:human_name),
@@ -28,4 +29,5 @@
 	%ul.alt-styles-list= render partial: "alt_style", collection: species_styles
 
 - content_for :stylesheets do
+	= stylesheet_link_tag "application/rainbow-pool"
 	= page_stylesheet_link_tag "alt_styles/index"

app/views/pet_types/index.html.haml

@@ -1,7 +1,7 @@
 - title "Rainbow Pool"
 - use_responsive_design
 
-= form_with method: :get, class: "pet-filters" do |form|
+= form_with method: :get, class: "rainbow-pool-filters" do |form|
     %fieldset
         %legend Filter by:
         = form.select :color, @color_names, selected: @selected_color&.human_name, include_blank: "Color…"
@@ -15,4 +15,5 @@
 = will_paginate @pet_types
 
 - content_for :stylesheets do
+    = stylesheet_link_tag "application/rainbow-pool"
     = page_stylesheet_link_tag "pet_types/index"