new theme mathallo created, first content blocks placed

config/sync/block.block.mathallo_navigationprincipale.yml

@@ -0,0 +1,34 @@
+uuid: 7c3c7ef7-6b0a-4ae6-8bf1-339e26ce01dd
+langcode: fr
+status: true
+dependencies:
+  config:
+    - system.menu.main
+  module:
+    - menu_block
+  theme:
+    - mathallo
+id: mathallo_navigationprincipale
+theme: mathallo
+region: header
+weight: 1
+provider: null
+plugin: 'menu_block:main'
+settings:
+  id: 'menu_block:main'
+  label: 'Navigation principale'
+  label_display: '0'
+  provider: menu_block
+  follow: false
+  follow_parent: child
+  display_empty: false
+  label_link: false
+  label_type: block
+  level: 1
+  depth: 0
+  expand_all_items: false
+  parent: 'main:'
+  render_parent: false
+  suggestion: main
+  hide_on_nonactive: false
+visibility: {  }