Check with reuse of the site banner on pages without specific banner

site/content/entrainements.md

@@ -1,6 +1,5 @@
 ---
 title: "Entrainements"
-featured_image: "images/banner3.jpg"
 omit_header_text: true
 type: page
 menu:

site/content/post/_index.md

@@ -1,6 +1,5 @@
 ---
 title: "Nouvelles du Club"
-featured_image: "images/banner4.jpg"
 omit_header_text: true
 ---
 

site/layouts/partials/page-header.html

@@ -17,8 +17,9 @@
     </div>
   </header>
 {{ else }}
-  <header>
-    <div class="{{ .Site.Params.background_color_class | default "bg-black" }}">
+{{ $sitewide_image := .Param "featured_image"}}
+  <header class="cover bg-top" style="background-image: url('{{ $sitewide_image }}');">
+    <div class="{{ .Site.Params.cover_dimming_class | default "bg-black-60" }}">
       {{ partial "site-navigation.html" . }}
     </div>
   </header>