diff --git a/config/install/mayo.settings.yml b/config/install/mayo.settings.yml
index 3a2e1bb..232a1f1 100644
--- a/config/install/mayo.settings.yml
+++ b/config/install/mayo.settings.yml
@@ -40,8 +40,8 @@ standard-pc:  true
 
 # Layout settings - Standard layout
 bigscreen_layout:          three_col_grail
-bigscreen_page_unit:       %
-bigscreen_sidebar_unit:    %
+bigscreen_page_unit:       0%
+bigscreen_sidebar_unit:    0%
 bigscreen_max_width_unit:  px
 bigscreen_page_width:      90
 bigscreen_sidebar_first:   25
@@ -53,8 +53,8 @@ bigscreen_media_query:     only screen and (min-width:1025px)
 
 # Layout settings - Tablet landscape
 tablet_landscape_layout: three_col_grail
-tablet_landscape_page_unit:       %
-tablet_landscape_sidebar_unit:    %
+tablet_landscape_page_unit:       0%
+tablet_landscape_sidebar_unit:    0%
 tablet_landscape_page_width:      90
 tablet_landscape_sidebar_first:   20
 tablet_landscape_sidebar_second:  20
@@ -63,8 +63,8 @@ tablet_landscape_media_query:     only screen and (min-width:769px) and (max-wid
 
 # Layout settings - Tablet portrait
 tablet_portrait_layout:          one_col_vert
-tablet_portrait_page_unit:       %
-tablet_portrait_sidebar_unit:    %
+tablet_portrait_page_unit:       0%
+tablet_portrait_sidebar_unit:    0%
 tablet_portrait_page_width:      90
 tablet_portrait_sidebar_first:   50
 tablet_portrait_sidebar_second:  50
@@ -73,8 +73,8 @@ tablet_portrait_media_query:     only screen and (min-width:481px) and (max-widt
 
 # Layout settings - Smalltouch landscape
 smalltouch_landscape_layout:          one_col_vert
-smalltouch_landscape_page_unit:       %
-smalltouch_landscape_sidebar_unit:    %
+smalltouch_landscape_page_unit:       0%
+smalltouch_landscape_sidebar_unit:    0%
 smalltouch_landscape_page_width:      100
 smalltouch_landscape_sidebar_first:   50
 smalltouch_landscape_sidebar_second:  50
@@ -83,14 +83,13 @@ smalltouch_landscape_media_query:     only screen and (min-width:321px) and (max
 
 # Layout settings - Smalltouch portrait
 smalltouch_portrait_layout:          one_col_stack
-smalltouch_portrait_page_unit:       %
-smalltouch_portrait_sidebar_unit:    %
+smalltouch_portrait_page_unit:       0%
+smalltouch_portrait_sidebar_unit:    0%
 smalltouch_portrait_page_width:      100
 smalltouch_portrait_sidebar_first:   100
 smalltouch_portrait_sidebar_second:  100
 smalltouch_portrait_media_query:     only screen and (max-width:320px)
 
 # CSS
-global_default_layout:          smalltouch-portrait
 global_default_layout_toggle:   false
 global_files_path:              public_files
diff --git a/mayo.info.yml b/mayo.info.yml
index 0bf1654..d446a42 100644
--- a/mayo.info.yml
+++ b/mayo.info.yml
@@ -3,6 +3,8 @@ type: theme
 description: 'Simple but fully customizable and colorable responsive layout theme.'
 version: VERSION
 core: 8.x
+base theme: false
+core_version_requirement: ^8 || ^9 || ^10
 libraries:
   - mayo/global-styling
 ckeditor_stylesheets: