Add subtheme definition.

subtheme/bootstrap_barrio_subtheme.info.yml

+name: Bootstrap Barrio Subtheme
+type: theme
+description: 'Basic structure for a Bootstrap Barrio SubTheme.'
+version: VERSION
+core: 8.x
+base theme: bootstrap_barrio
+
+libraries:
+  - bootstrap_barrio_subtheme/global-styling
+
+regions:
+  top_header: 'Top Header'
+  top_header_form: "Top Header Form"
+  header: Header
+  header_form: "Header Form"
+  primary_menu: 'Primary menu'
+  secondary_menu: 'Secondary menu'
+  page_top: 'Page top'
+  page_bottom: 'Page bottom'
+  highlighted: Highlighted
+  featured_top: 'Featured top'
+  breadcrumb: Breadcrumb
+  content: Content
+  sidebar_first: 'Sidebar first'
+  sidebar_second: 'Sidebar second'
+  featured_bottom_first: 'Featured bottom first'
+  featured_bottom_second: 'Featured bottom second'
+  featured_bottom_third: 'Featured bottom third'
+  footer_first: 'Footer first'
+  footer_second: 'Footer second'
+  footer_third: 'Footer third'
+  footer_fourth: 'Footer fourth'
+  footer_fifth: 'Footer fifth'

subtheme/bootstrap_barrio_subtheme.libraries.yml

+global-styling:
+  version: VERSION
+  css:
+    component:
+      css/style.css: {}

subtheme/config/install/bootstrap_barrio_subtheme.settings.yml

+# Layout
+# --------------
+bootstrap_barrio_sidebar_position: 'both'
+bootstrap_barrio_content_offset: 0
+bootstrap_barrio_sidebar_first_width: 3
+bootstrap_barrio_sidebar_first_offset: 0
+bootstrap_barrio_sidebar_second_width: 3
+bootstrap_barrio_sidebar_second_offset: 0
+bootstrap_barrio_footer_layout: '1-1-1-1-1'
+
+# Container
+# --------------
+bootstrap_barrio_fluid_container: 0
+
+# Buttons
+# --------------
+bootstrap_barrio_button_size: ''
+bootstrap_barrio_button_outline: 0
+
+# Navbar
+# --------------
+bootstrap_barrio_navbar_top_position: ''
+bootstrap_barrio_navbar_top_color: 0
+bootstrap_barrio_navbar_top_background: 'faded'
+bootstrap_barrio_navbar_position: ''
+bootstrap_barrio_navbar_color: 'dark'
+bootstrap_barrio_navbar_background: 'inverse'
+
+# Anchors
+# --------------
+bootstrap_barrio_anchors_fix: 1
+bootstrap_barrio_anchors_smooth_scrolling: 1
+
+# Forms
+# --------------
+bootstrap_barrio_forms_required_has_error: 0
+bootstrap_barrio_forms_has_error_value_toggle: 1
+bootstrap_barrio_forms_smart_descriptions: 1
+bootstrap_barrio_forms_smart_descriptions_limit: 250
+bootstrap_barrio_forms_smart_descriptions_allowed_tags: 'b, code, em, i, kbd, span, strong'
+
+
+# Popovers
+# --------------
+bootstrap_barrio_popover_enabled: 1
+bootstrap_barrio_popover_animation: 1
+bootstrap_barrio_popover_html: 0
+bootstrap_barrio_popover_placement: 'right'
+bootstrap_barrio_popover_selector: ''
+bootstrap_barrio_popover_trigger:
+  hover: 0
+bootstrap_barrio_popover_trigger:
+  focus: 0
+bootstrap_barrio_popover_trigger:
+  click: 'click'
+bootstrap_barrio_popover_trigger_autoclose: 1
+bootstrap_barrio_popover_title: ''
+bootstrap_barrio_popover_content: ''
+bootstrap_barrio_popover_delay: 0
+bootstrap_barrio_popover_container: 'body'
+
+# Tooltips
+# --------------
+bootstrap_barrio_tooltip_enabled: 1
+bootstrap_barrio_tooltip_descriptions: 1
+bootstrap_barrio_tooltip_descriptions_length: 200
+bootstrap_barrio_tooltip_animation: 1
+bootstrap_barrio_tooltip_html: 0
+bootstrap_barrio_tooltip_placement: 'auto left'
+bootstrap_barrio_tooltip_selector: ''
+bootstrap_barrio_tooltip_trigger:
+  hover: 'hover'
+bootstrap_barrio_tooltip_trigger:
+  focus: 'focus'
+bootstrap_barrio_tooltip_trigger:
+  click: 0
+bootstrap_barrio_tooltip_delay: 0
+bootstrap_barrio_tooltip_container: 'body'

subtheme/config/schema/bootstrap_barrio_subtheme.schema.yml

+# Schema for the configuration files of the Bootstrap Barrio Subtheme.
+
+bootstrap_barrio_subtheme.settings:
+  type: theme_settings
+  label: 'Bootstrap Barrio Subtheme settings'

subtheme/css/style.css

+/**
+ * @file
+ * Subtheme specific CSS.
+ */
+

subtheme/logo.svg

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