gateway/app/views/layouts/application.haml

!!!
%html
  %head
    %meta{:content => "text/html; charset=UTF-8", "http-equiv" => "Content-Type"}/
    %title Gateway
    %meta{:content => "width=device-width,initial-scale=1", :name => "viewport"}/
    = csrf_meta_tags
    = csp_meta_tag
    %link{:href => "https://cdn.jsdelivr.net/npm/tw-elements/dist/css/index.min.css", :rel => "stylesheet"}
    = stylesheet_link_tag "application"
    = stylesheet_link_tag "tailwind"
    = javascript_importmap_tags
  %body
    =render "layouts/header"
    = yield
    =render "layouts/footer"