column number option for 2_col, also bg

app/views/merged/view/_section_2_col.haml

@@ -1,4 +1,4 @@
-.flex.flex-col.bg-cyan-100.mx-5
+.flex.flex-col.mx-5{ background_option(section)}
   .flex.items-center.justify-center.flex-1
     .max-w-prose.px-4.py-8.mx-auto.text-center
       %h1.text-2xl.font-bold.tracking-tight.text-gray-900.sm:text-4xl
@@ -6,6 +6,6 @@
       %p.mt-4.text-gray-500
         = section.text
   - template = "merged/view/cards/" + section.card_template
-  .grid.grid-cols-1.md:grid-cols-2
+  .grid{ column_option(section)}
     - section.cards.each do |element|
       = render( template , element: element)