grid posts columns variables

assets/sass/_theme/_configuration.sass

@@ -314,6 +314,9 @@ $article-media-aspect-ratio: 2 !default
 $post-media-background: $article-media-background !default
 $post-categories-color: color-contrast($color-text, 20%) !default
 $post-time-color: $color-text-alt !default
+// Layout posts list (ne concerne pas les blocks posts)
+$posts-layout-list: true !default
+// Si layout posts grid (ne concerne pas les blocks posts)
 $posts-grid-columns: $block-posts-grid-columns !default
 
 // Person
@@ -326,9 +329,6 @@ $program-share-font-size: $meta-size !default
 $program-share-font-size-md: $meta-size-md !default
 $program-zindex-toc: $zindex-toc !default
 
-// Layout posts list (ne concerne pas les blocks posts)
-$posts-layout-list: true !default
-
 // MISC
 
 // Animations