diff --git a/addons/portal/__manifest__.py b/addons/portal/__manifest__.py
index 46e14fff2ab..aedcb33877f 100644
--- a/addons/portal/__manifest__.py
+++ b/addons/portal/__manifest__.py
@@ -36,7 +36,6 @@ a dependency towards website editing and customization capabilities.""",
             'portal/static/src/views/**/*',
         ],
         'web.assets_frontend': [
-            'portal/static/src/scss/bootstrap.extend.scss',
             'portal/static/src/scss/portal.scss',
             'portal/static/src/js/portal.js',
             'portal/static/src/js/portal_chatter.js',
diff --git a/addons/portal/static/src/scss/bootstrap.extend.scss b/addons/portal/static/src/scss/bootstrap.extend.scss
deleted file mode 100644
index 21eacb47df1..00000000000
--- a/addons/portal/static/src/scss/bootstrap.extend.scss
+++ /dev/null
@@ -1,13 +0,0 @@
-@each $breakpoint in map-keys($grid-breakpoints) {
-    @include media-breakpoint-up($breakpoint) {
-        $infix: breakpoint-infix($breakpoint, $grid-breakpoints);
-
-        @if $infix != '' { // Standard ones are already created by bootstrap
-            @each $prop, $abbrev in (width: w, height: h) {
-                @each $size, $length in $sizes {
-                    .#{$abbrev}#{$infix}-#{$size} { #{$prop}: $length !important; }
-                }
-            }
-        }
-    }
-}
diff --git a/addons/portal/static/src/scss/bootstrap_overridden.scss b/addons/portal/static/src/scss/bootstrap_overridden.scss
index 8527d8f0651..6b3031ae531 100644
--- a/addons/portal/static/src/scss/bootstrap_overridden.scss
+++ b/addons/portal/static/src/scss/bootstrap_overridden.scss
@@ -12,12 +12,6 @@ $gray-900: #212529 !default;
 
 $gray-300: #dee2e6 !default;
 
-// This variable affects the `.h-*` and `.w-*` classes.
-$sizes: () !default;
-$sizes: map-merge((
-    0: 0,
-), $sizes);
-
 // Body
 //
 // Settings for the `<body>` element.
diff --git a/addons/web/static/src/scss/utilities_custom.scss b/addons/web/static/src/scss/utilities_custom.scss
index 157795a4626..01ac4500901 100644
--- a/addons/web/static/src/scss/utilities_custom.scss
+++ b/addons/web/static/src/scss/utilities_custom.scss
@@ -98,12 +98,14 @@ $utilities: map-merge(
             map-get($utilities, "width"),
             (
                 responsive: true,
+                values: $utilities-sizes,
             ),
         ),
         "height": map-merge(
             map-get($utilities, "height"),
             (
                 responsive: true,
+                values: $utilities-sizes,
             ),
         ),
         "max-width": map-merge(