update and adapt from main

assets/sass/_theme/_configuration.sass

@@ -40,12 +40,12 @@ $spacing-6: space(32)  // 128px
 $spacing-7: space(64)  // 256px
 
 // Deprecated variables
-// $spacing0: space(3) !default
-// $spacing1: space(6) !default
-// $spacing2: space(12) !default
-// $spacing3: space(16) !default
-// $spacing4: space(32) !default
-// $spacing5: space(64) !default
+// $spacing-2: space(3) !default
+// $spacing-3: space(6) !default
+// $spacing-4: space(12) !default
+// $spacing-5: space(16) !default
+// $spacing-6: space(32) !default
+// $spacing-7: space(64) !default
 
 // TYPOGRAPHY
 

assets/sass/_theme/design-system/footer.sass

@@ -27,7 +27,7 @@ footer#document-footer
         &-site
             @include small
             * + *
-                margin-top: $spacing0
+                margin-top: $spacing-2
         &-social, &-legals, &-credit
             @include meta
         &-credit