more theming: search block, multiblock header, generale layout, fonts, colors, background

config/sync/block.block.mathallo_formulairederecherche.yml

@@ -0,0 +1,21 @@
+uuid: 555155e0-e81b-4efd-8ad3-2edce0f4eaa2
+langcode: fr
+status: true
+dependencies:
+  module:
+    - search
+  theme:
+    - mathallo
+id: mathallo_formulairederecherche
+theme: mathallo
+region: header_left
+weight: -1
+provider: null
+plugin: search_form_block
+settings:
+  id: search_form_block
+  label: 'Formulaire de recherche'
+  label_display: '0'
+  provider: search
+  page_id: node_search
+visibility: {  }