diff --git a/css/ReadiumCSS-config.css b/css/ReadiumCSS-config.css
index e713017..78e601d 100644
--- a/css/ReadiumCSS-config.css
+++ b/css/ReadiumCSS-config.css
@@ -47,4 +47,7 @@
 
 /* Patch for iOS and iPadOS */
 @custom-selector :--iOS-patch [style*="readium-iOSPatch-on"];
-@custom-selector :--ipadOS-patch [style*="readium-iPadOSPatch-on"];
\ No newline at end of file
+@custom-selector :--ipadOS-patch [style*="readium-iPadOSPatch-on"];
+
+/* Experimental/Feature flags */
+@custom-selector :--experimental-zoom [style*="readium-experimentalZoom-on"];
\ No newline at end of file
diff --git a/css/dist/ReadiumCSS-after.css b/css/dist/ReadiumCSS-after.css
index 57d7c3c..53f5c36 100644
--- a/css/dist/ReadiumCSS-after.css
+++ b/css/dist/ReadiumCSS-after.css
@@ -1,5 +1,5 @@
 /*!
- * Readium CSS v.2.0.0-beta.22
+ * Readium CSS v.2.0.0-beta.23
  * Copyright (c) 2017–2025. Readium Foundation. All rights reserved.
  * Use of this source code is governed by a BSD-style license which is detailed in the
  * LICENSE file present in the project repository where this source code is maintained.
@@ -303,26 +303,26 @@ body{
 
 @supports selector(figure:has(> img)){
 
-  :root:not([style*="readium-deprecatedFontSize-on"]):not([style*="readium-iOSPatch-on"])[style*="--USER__fontSize"] figure:has(> img),
-  :root:not([style*="readium-deprecatedFontSize-on"]):not([style*="readium-iOSPatch-on"])[style*="--USER__fontSize"] figure:has(> video),
-  :root:not([style*="readium-deprecatedFontSize-on"]):not([style*="readium-iOSPatch-on"])[style*="--USER__fontSize"] figure:has(> svg),
-  :root:not([style*="readium-deprecatedFontSize-on"]):not([style*="readium-iOSPatch-on"])[style*="--USER__fontSize"] figure:has(> canvas),
-  :root:not([style*="readium-deprecatedFontSize-on"]):not([style*="readium-iOSPatch-on"])[style*="--USER__fontSize"] figure:has(> iframe),
-  :root:not([style*="readium-deprecatedFontSize-on"]):not([style*="readium-iOSPatch-on"])[style*="--USER__fontSize"] figure:has(> audio),
-  :root:not([style*="readium-deprecatedFontSize-on"]):not([style*="readium-iOSPatch-on"])[style*="--USER__fontSize"] div:has(> img),
-  :root:not([style*="readium-deprecatedFontSize-on"]):not([style*="readium-iOSPatch-on"])[style*="--USER__fontSize"] div:has(> video),
-  :root:not([style*="readium-deprecatedFontSize-on"]):not([style*="readium-iOSPatch-on"])[style*="--USER__fontSize"] div:has(> svg),
-  :root:not([style*="readium-deprecatedFontSize-on"]):not([style*="readium-iOSPatch-on"])[style*="--USER__fontSize"] div:has(> canvas),
-  :root:not([style*="readium-deprecatedFontSize-on"]):not([style*="readium-iOSPatch-on"])[style*="--USER__fontSize"] div:has(> iframe),
-  :root:not([style*="readium-deprecatedFontSize-on"]):not([style*="readium-iOSPatch-on"])[style*="--USER__fontSize"] div:has(> audio),
-  :root:not([style*="readium-deprecatedFontSize-on"]):not([style*="readium-iOSPatch-on"])[style*="--USER__fontSize"] table{
+  :root[style*="readium-experimentalZoom-on"]:not([style*="readium-deprecatedFontSize-on"]):not([style*="readium-iOSPatch-on"])[style*="--USER__fontSize"] figure:has(> img),
+  :root[style*="readium-experimentalZoom-on"]:not([style*="readium-deprecatedFontSize-on"]):not([style*="readium-iOSPatch-on"])[style*="--USER__fontSize"] figure:has(> video),
+  :root[style*="readium-experimentalZoom-on"]:not([style*="readium-deprecatedFontSize-on"]):not([style*="readium-iOSPatch-on"])[style*="--USER__fontSize"] figure:has(> svg),
+  :root[style*="readium-experimentalZoom-on"]:not([style*="readium-deprecatedFontSize-on"]):not([style*="readium-iOSPatch-on"])[style*="--USER__fontSize"] figure:has(> canvas),
+  :root[style*="readium-experimentalZoom-on"]:not([style*="readium-deprecatedFontSize-on"]):not([style*="readium-iOSPatch-on"])[style*="--USER__fontSize"] figure:has(> iframe),
+  :root[style*="readium-experimentalZoom-on"]:not([style*="readium-deprecatedFontSize-on"]):not([style*="readium-iOSPatch-on"])[style*="--USER__fontSize"] figure:has(> audio),
+  :root[style*="readium-experimentalZoom-on"]:not([style*="readium-deprecatedFontSize-on"]):not([style*="readium-iOSPatch-on"])[style*="--USER__fontSize"] div:has(> img:only-child),
+  :root[style*="readium-experimentalZoom-on"]:not([style*="readium-deprecatedFontSize-on"]):not([style*="readium-iOSPatch-on"])[style*="--USER__fontSize"] div:has(> video:only-child),
+  :root[style*="readium-experimentalZoom-on"]:not([style*="readium-deprecatedFontSize-on"]):not([style*="readium-iOSPatch-on"])[style*="--USER__fontSize"] div:has(> svg:only-child),
+  :root[style*="readium-experimentalZoom-on"]:not([style*="readium-deprecatedFontSize-on"]):not([style*="readium-iOSPatch-on"])[style*="--USER__fontSize"] div:has(> canvas:only-child),
+  :root[style*="readium-experimentalZoom-on"]:not([style*="readium-deprecatedFontSize-on"]):not([style*="readium-iOSPatch-on"])[style*="--USER__fontSize"] div:has(> iframe:only-child),
+  :root[style*="readium-experimentalZoom-on"]:not([style*="readium-deprecatedFontSize-on"]):not([style*="readium-iOSPatch-on"])[style*="--USER__fontSize"] div:has(> audio:only-child),
+  :root[style*="readium-experimentalZoom-on"]:not([style*="readium-deprecatedFontSize-on"]):not([style*="readium-iOSPatch-on"])[style*="--USER__fontSize"] table{
     zoom:calc(100% / var(--USER__fontSize)) !important;
   }
 
-  :root:not([style*="readium-deprecatedFontSize-on"]):not([style*="readium-iOSPatch-on"])[style*="--USER__fontSize"] figcaption,
-  :root:not([style*="readium-deprecatedFontSize-on"]):not([style*="readium-iOSPatch-on"])[style*="--USER__fontSize"] caption,
-  :root:not([style*="readium-deprecatedFontSize-on"]):not([style*="readium-iOSPatch-on"])[style*="--USER__fontSize"] td,
-  :root:not([style*="readium-deprecatedFontSize-on"]):not([style*="readium-iOSPatch-on"])[style*="--USER__fontSize"] th{
+  :root[style*="readium-experimentalZoom-on"]:not([style*="readium-deprecatedFontSize-on"]):not([style*="readium-iOSPatch-on"])[style*="--USER__fontSize"] figcaption,
+  :root[style*="readium-experimentalZoom-on"]:not([style*="readium-deprecatedFontSize-on"]):not([style*="readium-iOSPatch-on"])[style*="--USER__fontSize"] caption,
+  :root[style*="readium-experimentalZoom-on"]:not([style*="readium-deprecatedFontSize-on"]):not([style*="readium-iOSPatch-on"])[style*="--USER__fontSize"] td,
+  :root[style*="readium-experimentalZoom-on"]:not([style*="readium-deprecatedFontSize-on"]):not([style*="readium-iOSPatch-on"])[style*="--USER__fontSize"] th{
     zoom:var(--USER__fontSize) !important;
   }
 }
diff --git a/css/dist/ReadiumCSS-before.css b/css/dist/ReadiumCSS-before.css
index 9e205d9..442444b 100644
--- a/css/dist/ReadiumCSS-before.css
+++ b/css/dist/ReadiumCSS-before.css
@@ -1,5 +1,5 @@
 /*!
- * Readium CSS v.2.0.0-beta.22
+ * Readium CSS v.2.0.0-beta.23
  * Copyright (c) 2017–2025. Readium Foundation. All rights reserved.
  * Use of this source code is governed by a BSD-style license which is detailed in the
  * LICENSE file present in the project repository where this source code is maintained.
diff --git a/css/dist/ReadiumCSS-default.css b/css/dist/ReadiumCSS-default.css
index 58a8139..a4a1e9a 100644
--- a/css/dist/ReadiumCSS-default.css
+++ b/css/dist/ReadiumCSS-default.css
@@ -1,5 +1,5 @@
 /*!
- * Readium CSS v.2.0.0-beta.22
+ * Readium CSS v.2.0.0-beta.23
  * Copyright (c) 2017–2025. Readium Foundation. All rights reserved.
  * Use of this source code is governed by a BSD-style license which is detailed in the
  * LICENSE file present in the project repository where this source code is maintained.
diff --git a/css/dist/cjk-horizontal/ReadiumCSS-after.css b/css/dist/cjk-horizontal/ReadiumCSS-after.css
index 724f104..f27aa91 100644
--- a/css/dist/cjk-horizontal/ReadiumCSS-after.css
+++ b/css/dist/cjk-horizontal/ReadiumCSS-after.css
@@ -1,5 +1,5 @@
 /*!
- * Readium CSS v.2.0.0-beta.22
+ * Readium CSS v.2.0.0-beta.23
  * Copyright (c) 2017–2025. Readium Foundation. All rights reserved.
  * Use of this source code is governed by a BSD-style license which is detailed in the
  * LICENSE file present in the project repository where this source code is maintained.
@@ -227,26 +227,26 @@ body{
 
 @supports selector(figure:has(> img)){
 
-  :root:not([style*="readium-deprecatedFontSize-on"]):not([style*="readium-iOSPatch-on"])[style*="--USER__fontSize"] figure:has(> img),
-  :root:not([style*="readium-deprecatedFontSize-on"]):not([style*="readium-iOSPatch-on"])[style*="--USER__fontSize"] figure:has(> video),
-  :root:not([style*="readium-deprecatedFontSize-on"]):not([style*="readium-iOSPatch-on"])[style*="--USER__fontSize"] figure:has(> svg),
-  :root:not([style*="readium-deprecatedFontSize-on"]):not([style*="readium-iOSPatch-on"])[style*="--USER__fontSize"] figure:has(> canvas),
-  :root:not([style*="readium-deprecatedFontSize-on"]):not([style*="readium-iOSPatch-on"])[style*="--USER__fontSize"] figure:has(> iframe),
-  :root:not([style*="readium-deprecatedFontSize-on"]):not([style*="readium-iOSPatch-on"])[style*="--USER__fontSize"] figure:has(> audio),
-  :root:not([style*="readium-deprecatedFontSize-on"]):not([style*="readium-iOSPatch-on"])[style*="--USER__fontSize"] div:has(> img),
-  :root:not([style*="readium-deprecatedFontSize-on"]):not([style*="readium-iOSPatch-on"])[style*="--USER__fontSize"] div:has(> video),
-  :root:not([style*="readium-deprecatedFontSize-on"]):not([style*="readium-iOSPatch-on"])[style*="--USER__fontSize"] div:has(> svg),
-  :root:not([style*="readium-deprecatedFontSize-on"]):not([style*="readium-iOSPatch-on"])[style*="--USER__fontSize"] div:has(> canvas),
-  :root:not([style*="readium-deprecatedFontSize-on"]):not([style*="readium-iOSPatch-on"])[style*="--USER__fontSize"] div:has(> iframe),
-  :root:not([style*="readium-deprecatedFontSize-on"]):not([style*="readium-iOSPatch-on"])[style*="--USER__fontSize"] div:has(> audio),
-  :root:not([style*="readium-deprecatedFontSize-on"]):not([style*="readium-iOSPatch-on"])[style*="--USER__fontSize"] table{
+  :root[style*="readium-experimentalZoom-on"]:not([style*="readium-deprecatedFontSize-on"]):not([style*="readium-iOSPatch-on"])[style*="--USER__fontSize"] figure:has(> img),
+  :root[style*="readium-experimentalZoom-on"]:not([style*="readium-deprecatedFontSize-on"]):not([style*="readium-iOSPatch-on"])[style*="--USER__fontSize"] figure:has(> video),
+  :root[style*="readium-experimentalZoom-on"]:not([style*="readium-deprecatedFontSize-on"]):not([style*="readium-iOSPatch-on"])[style*="--USER__fontSize"] figure:has(> svg),
+  :root[style*="readium-experimentalZoom-on"]:not([style*="readium-deprecatedFontSize-on"]):not([style*="readium-iOSPatch-on"])[style*="--USER__fontSize"] figure:has(> canvas),
+  :root[style*="readium-experimentalZoom-on"]:not([style*="readium-deprecatedFontSize-on"]):not([style*="readium-iOSPatch-on"])[style*="--USER__fontSize"] figure:has(> iframe),
+  :root[style*="readium-experimentalZoom-on"]:not([style*="readium-deprecatedFontSize-on"]):not([style*="readium-iOSPatch-on"])[style*="--USER__fontSize"] figure:has(> audio),
+  :root[style*="readium-experimentalZoom-on"]:not([style*="readium-deprecatedFontSize-on"]):not([style*="readium-iOSPatch-on"])[style*="--USER__fontSize"] div:has(> img:only-child),
+  :root[style*="readium-experimentalZoom-on"]:not([style*="readium-deprecatedFontSize-on"]):not([style*="readium-iOSPatch-on"])[style*="--USER__fontSize"] div:has(> video:only-child),
+  :root[style*="readium-experimentalZoom-on"]:not([style*="readium-deprecatedFontSize-on"]):not([style*="readium-iOSPatch-on"])[style*="--USER__fontSize"] div:has(> svg:only-child),
+  :root[style*="readium-experimentalZoom-on"]:not([style*="readium-deprecatedFontSize-on"]):not([style*="readium-iOSPatch-on"])[style*="--USER__fontSize"] div:has(> canvas:only-child),
+  :root[style*="readium-experimentalZoom-on"]:not([style*="readium-deprecatedFontSize-on"]):not([style*="readium-iOSPatch-on"])[style*="--USER__fontSize"] div:has(> iframe:only-child),
+  :root[style*="readium-experimentalZoom-on"]:not([style*="readium-deprecatedFontSize-on"]):not([style*="readium-iOSPatch-on"])[style*="--USER__fontSize"] div:has(> audio:only-child),
+  :root[style*="readium-experimentalZoom-on"]:not([style*="readium-deprecatedFontSize-on"]):not([style*="readium-iOSPatch-on"])[style*="--USER__fontSize"] table{
     zoom:calc(100% / var(--USER__fontSize)) !important;
   }
 
-  :root:not([style*="readium-deprecatedFontSize-on"]):not([style*="readium-iOSPatch-on"])[style*="--USER__fontSize"] figcaption,
-  :root:not([style*="readium-deprecatedFontSize-on"]):not([style*="readium-iOSPatch-on"])[style*="--USER__fontSize"] caption,
-  :root:not([style*="readium-deprecatedFontSize-on"]):not([style*="readium-iOSPatch-on"])[style*="--USER__fontSize"] td,
-  :root:not([style*="readium-deprecatedFontSize-on"]):not([style*="readium-iOSPatch-on"])[style*="--USER__fontSize"] th{
+  :root[style*="readium-experimentalZoom-on"]:not([style*="readium-deprecatedFontSize-on"]):not([style*="readium-iOSPatch-on"])[style*="--USER__fontSize"] figcaption,
+  :root[style*="readium-experimentalZoom-on"]:not([style*="readium-deprecatedFontSize-on"]):not([style*="readium-iOSPatch-on"])[style*="--USER__fontSize"] caption,
+  :root[style*="readium-experimentalZoom-on"]:not([style*="readium-deprecatedFontSize-on"]):not([style*="readium-iOSPatch-on"])[style*="--USER__fontSize"] td,
+  :root[style*="readium-experimentalZoom-on"]:not([style*="readium-deprecatedFontSize-on"]):not([style*="readium-iOSPatch-on"])[style*="--USER__fontSize"] th{
     zoom:var(--USER__fontSize) !important;
   }
 }
diff --git a/css/dist/cjk-horizontal/ReadiumCSS-before.css b/css/dist/cjk-horizontal/ReadiumCSS-before.css
index 9d90c47..86935a9 100644
--- a/css/dist/cjk-horizontal/ReadiumCSS-before.css
+++ b/css/dist/cjk-horizontal/ReadiumCSS-before.css
@@ -1,5 +1,5 @@
 /*!
- * Readium CSS v.2.0.0-beta.22
+ * Readium CSS v.2.0.0-beta.23
  * Copyright (c) 2017–2025. Readium Foundation. All rights reserved.
  * Use of this source code is governed by a BSD-style license which is detailed in the
  * LICENSE file present in the project repository where this source code is maintained.
diff --git a/css/dist/cjk-horizontal/ReadiumCSS-default.css b/css/dist/cjk-horizontal/ReadiumCSS-default.css
index 9394faa..4d17c7d 100644
--- a/css/dist/cjk-horizontal/ReadiumCSS-default.css
+++ b/css/dist/cjk-horizontal/ReadiumCSS-default.css
@@ -1,5 +1,5 @@
 /*!
- * Readium CSS v.2.0.0-beta.22
+ * Readium CSS v.2.0.0-beta.23
  * Copyright (c) 2017–2025. Readium Foundation. All rights reserved.
  * Use of this source code is governed by a BSD-style license which is detailed in the
  * LICENSE file present in the project repository where this source code is maintained.
diff --git a/css/dist/cjk-vertical/ReadiumCSS-after.css b/css/dist/cjk-vertical/ReadiumCSS-after.css
index 4ee1db8..d108ec7 100644
--- a/css/dist/cjk-vertical/ReadiumCSS-after.css
+++ b/css/dist/cjk-vertical/ReadiumCSS-after.css
@@ -1,5 +1,5 @@
 /*!
- * Readium CSS v.2.0.0-beta.22
+ * Readium CSS v.2.0.0-beta.23
  * Copyright (c) 2017–2025. Readium Foundation. All rights reserved.
  * Use of this source code is governed by a BSD-style license which is detailed in the
  * LICENSE file present in the project repository where this source code is maintained.
@@ -212,26 +212,26 @@ body{
 
 @supports selector(figure:has(> img)){
 
-  :root:not([style*="readium-deprecatedFontSize-on"]):not([style*="readium-iOSPatch-on"])[style*="--USER__fontSize"] figure:has(> img),
-  :root:not([style*="readium-deprecatedFontSize-on"]):not([style*="readium-iOSPatch-on"])[style*="--USER__fontSize"] figure:has(> video),
-  :root:not([style*="readium-deprecatedFontSize-on"]):not([style*="readium-iOSPatch-on"])[style*="--USER__fontSize"] figure:has(> svg),
-  :root:not([style*="readium-deprecatedFontSize-on"]):not([style*="readium-iOSPatch-on"])[style*="--USER__fontSize"] figure:has(> canvas),
-  :root:not([style*="readium-deprecatedFontSize-on"]):not([style*="readium-iOSPatch-on"])[style*="--USER__fontSize"] figure:has(> iframe),
-  :root:not([style*="readium-deprecatedFontSize-on"]):not([style*="readium-iOSPatch-on"])[style*="--USER__fontSize"] figure:has(> audio),
-  :root:not([style*="readium-deprecatedFontSize-on"]):not([style*="readium-iOSPatch-on"])[style*="--USER__fontSize"] div:has(> img),
-  :root:not([style*="readium-deprecatedFontSize-on"]):not([style*="readium-iOSPatch-on"])[style*="--USER__fontSize"] div:has(> video),
-  :root:not([style*="readium-deprecatedFontSize-on"]):not([style*="readium-iOSPatch-on"])[style*="--USER__fontSize"] div:has(> svg),
-  :root:not([style*="readium-deprecatedFontSize-on"]):not([style*="readium-iOSPatch-on"])[style*="--USER__fontSize"] div:has(> canvas),
-  :root:not([style*="readium-deprecatedFontSize-on"]):not([style*="readium-iOSPatch-on"])[style*="--USER__fontSize"] div:has(> iframe),
-  :root:not([style*="readium-deprecatedFontSize-on"]):not([style*="readium-iOSPatch-on"])[style*="--USER__fontSize"] div:has(> audio),
-  :root:not([style*="readium-deprecatedFontSize-on"]):not([style*="readium-iOSPatch-on"])[style*="--USER__fontSize"] table{
+  :root[style*="readium-experimentalZoom-on"]:not([style*="readium-deprecatedFontSize-on"]):not([style*="readium-iOSPatch-on"])[style*="--USER__fontSize"] figure:has(> img),
+  :root[style*="readium-experimentalZoom-on"]:not([style*="readium-deprecatedFontSize-on"]):not([style*="readium-iOSPatch-on"])[style*="--USER__fontSize"] figure:has(> video),
+  :root[style*="readium-experimentalZoom-on"]:not([style*="readium-deprecatedFontSize-on"]):not([style*="readium-iOSPatch-on"])[style*="--USER__fontSize"] figure:has(> svg),
+  :root[style*="readium-experimentalZoom-on"]:not([style*="readium-deprecatedFontSize-on"]):not([style*="readium-iOSPatch-on"])[style*="--USER__fontSize"] figure:has(> canvas),
+  :root[style*="readium-experimentalZoom-on"]:not([style*="readium-deprecatedFontSize-on"]):not([style*="readium-iOSPatch-on"])[style*="--USER__fontSize"] figure:has(> iframe),
+  :root[style*="readium-experimentalZoom-on"]:not([style*="readium-deprecatedFontSize-on"]):not([style*="readium-iOSPatch-on"])[style*="--USER__fontSize"] figure:has(> audio),
+  :root[style*="readium-experimentalZoom-on"]:not([style*="readium-deprecatedFontSize-on"]):not([style*="readium-iOSPatch-on"])[style*="--USER__fontSize"] div:has(> img:only-child),
+  :root[style*="readium-experimentalZoom-on"]:not([style*="readium-deprecatedFontSize-on"]):not([style*="readium-iOSPatch-on"])[style*="--USER__fontSize"] div:has(> video:only-child),
+  :root[style*="readium-experimentalZoom-on"]:not([style*="readium-deprecatedFontSize-on"]):not([style*="readium-iOSPatch-on"])[style*="--USER__fontSize"] div:has(> svg:only-child),
+  :root[style*="readium-experimentalZoom-on"]:not([style*="readium-deprecatedFontSize-on"]):not([style*="readium-iOSPatch-on"])[style*="--USER__fontSize"] div:has(> canvas:only-child),
+  :root[style*="readium-experimentalZoom-on"]:not([style*="readium-deprecatedFontSize-on"]):not([style*="readium-iOSPatch-on"])[style*="--USER__fontSize"] div:has(> iframe:only-child),
+  :root[style*="readium-experimentalZoom-on"]:not([style*="readium-deprecatedFontSize-on"]):not([style*="readium-iOSPatch-on"])[style*="--USER__fontSize"] div:has(> audio:only-child),
+  :root[style*="readium-experimentalZoom-on"]:not([style*="readium-deprecatedFontSize-on"]):not([style*="readium-iOSPatch-on"])[style*="--USER__fontSize"] table{
     zoom:calc(100% / var(--USER__fontSize)) !important;
   }
 
-  :root:not([style*="readium-deprecatedFontSize-on"]):not([style*="readium-iOSPatch-on"])[style*="--USER__fontSize"] figcaption,
-  :root:not([style*="readium-deprecatedFontSize-on"]):not([style*="readium-iOSPatch-on"])[style*="--USER__fontSize"] caption,
-  :root:not([style*="readium-deprecatedFontSize-on"]):not([style*="readium-iOSPatch-on"])[style*="--USER__fontSize"] td,
-  :root:not([style*="readium-deprecatedFontSize-on"]):not([style*="readium-iOSPatch-on"])[style*="--USER__fontSize"] th{
+  :root[style*="readium-experimentalZoom-on"]:not([style*="readium-deprecatedFontSize-on"]):not([style*="readium-iOSPatch-on"])[style*="--USER__fontSize"] figcaption,
+  :root[style*="readium-experimentalZoom-on"]:not([style*="readium-deprecatedFontSize-on"]):not([style*="readium-iOSPatch-on"])[style*="--USER__fontSize"] caption,
+  :root[style*="readium-experimentalZoom-on"]:not([style*="readium-deprecatedFontSize-on"]):not([style*="readium-iOSPatch-on"])[style*="--USER__fontSize"] td,
+  :root[style*="readium-experimentalZoom-on"]:not([style*="readium-deprecatedFontSize-on"]):not([style*="readium-iOSPatch-on"])[style*="--USER__fontSize"] th{
     zoom:var(--USER__fontSize) !important;
   }
 }
diff --git a/css/dist/cjk-vertical/ReadiumCSS-before.css b/css/dist/cjk-vertical/ReadiumCSS-before.css
index e9b183f..9eb04eb 100644
--- a/css/dist/cjk-vertical/ReadiumCSS-before.css
+++ b/css/dist/cjk-vertical/ReadiumCSS-before.css
@@ -1,5 +1,5 @@
 /*!
- * Readium CSS v.2.0.0-beta.22
+ * Readium CSS v.2.0.0-beta.23
  * Copyright (c) 2017–2025. Readium Foundation. All rights reserved.
  * Use of this source code is governed by a BSD-style license which is detailed in the
  * LICENSE file present in the project repository where this source code is maintained.
diff --git a/css/dist/cjk-vertical/ReadiumCSS-default.css b/css/dist/cjk-vertical/ReadiumCSS-default.css
index e2c9c96..34ad0fe 100644
--- a/css/dist/cjk-vertical/ReadiumCSS-default.css
+++ b/css/dist/cjk-vertical/ReadiumCSS-default.css
@@ -1,5 +1,5 @@
 /*!
- * Readium CSS v.2.0.0-beta.22
+ * Readium CSS v.2.0.0-beta.23
  * Copyright (c) 2017–2025. Readium Foundation. All rights reserved.
  * Use of this source code is governed by a BSD-style license which is detailed in the
  * LICENSE file present in the project repository where this source code is maintained.
diff --git a/css/dist/rtl/ReadiumCSS-after.css b/css/dist/rtl/ReadiumCSS-after.css
index ed19ada..daaa065 100644
--- a/css/dist/rtl/ReadiumCSS-after.css
+++ b/css/dist/rtl/ReadiumCSS-after.css
@@ -1,5 +1,5 @@
 /*!
- * Readium CSS v.2.0.0-beta.22
+ * Readium CSS v.2.0.0-beta.23
  * Copyright (c) 2017–2025. Readium Foundation. All rights reserved.
  * Use of this source code is governed by a BSD-style license which is detailed in the
  * LICENSE file present in the project repository where this source code is maintained.
@@ -241,26 +241,26 @@ body{
 
 @supports selector(figure:has(> img)){
 
-  :root:not([style*="readium-deprecatedFontSize-on"]):not([style*="readium-iOSPatch-on"])[style*="--USER__fontSize"] figure:has(> img),
-  :root:not([style*="readium-deprecatedFontSize-on"]):not([style*="readium-iOSPatch-on"])[style*="--USER__fontSize"] figure:has(> video),
-  :root:not([style*="readium-deprecatedFontSize-on"]):not([style*="readium-iOSPatch-on"])[style*="--USER__fontSize"] figure:has(> svg),
-  :root:not([style*="readium-deprecatedFontSize-on"]):not([style*="readium-iOSPatch-on"])[style*="--USER__fontSize"] figure:has(> canvas),
-  :root:not([style*="readium-deprecatedFontSize-on"]):not([style*="readium-iOSPatch-on"])[style*="--USER__fontSize"] figure:has(> iframe),
-  :root:not([style*="readium-deprecatedFontSize-on"]):not([style*="readium-iOSPatch-on"])[style*="--USER__fontSize"] figure:has(> audio),
-  :root:not([style*="readium-deprecatedFontSize-on"]):not([style*="readium-iOSPatch-on"])[style*="--USER__fontSize"] div:has(> img),
-  :root:not([style*="readium-deprecatedFontSize-on"]):not([style*="readium-iOSPatch-on"])[style*="--USER__fontSize"] div:has(> video),
-  :root:not([style*="readium-deprecatedFontSize-on"]):not([style*="readium-iOSPatch-on"])[style*="--USER__fontSize"] div:has(> svg),
-  :root:not([style*="readium-deprecatedFontSize-on"]):not([style*="readium-iOSPatch-on"])[style*="--USER__fontSize"] div:has(> canvas),
-  :root:not([style*="readium-deprecatedFontSize-on"]):not([style*="readium-iOSPatch-on"])[style*="--USER__fontSize"] div:has(> iframe),
-  :root:not([style*="readium-deprecatedFontSize-on"]):not([style*="readium-iOSPatch-on"])[style*="--USER__fontSize"] div:has(> audio),
-  :root:not([style*="readium-deprecatedFontSize-on"]):not([style*="readium-iOSPatch-on"])[style*="--USER__fontSize"] table{
+  :root[style*="readium-experimentalZoom-on"]:not([style*="readium-deprecatedFontSize-on"]):not([style*="readium-iOSPatch-on"])[style*="--USER__fontSize"] figure:has(> img),
+  :root[style*="readium-experimentalZoom-on"]:not([style*="readium-deprecatedFontSize-on"]):not([style*="readium-iOSPatch-on"])[style*="--USER__fontSize"] figure:has(> video),
+  :root[style*="readium-experimentalZoom-on"]:not([style*="readium-deprecatedFontSize-on"]):not([style*="readium-iOSPatch-on"])[style*="--USER__fontSize"] figure:has(> svg),
+  :root[style*="readium-experimentalZoom-on"]:not([style*="readium-deprecatedFontSize-on"]):not([style*="readium-iOSPatch-on"])[style*="--USER__fontSize"] figure:has(> canvas),
+  :root[style*="readium-experimentalZoom-on"]:not([style*="readium-deprecatedFontSize-on"]):not([style*="readium-iOSPatch-on"])[style*="--USER__fontSize"] figure:has(> iframe),
+  :root[style*="readium-experimentalZoom-on"]:not([style*="readium-deprecatedFontSize-on"]):not([style*="readium-iOSPatch-on"])[style*="--USER__fontSize"] figure:has(> audio),
+  :root[style*="readium-experimentalZoom-on"]:not([style*="readium-deprecatedFontSize-on"]):not([style*="readium-iOSPatch-on"])[style*="--USER__fontSize"] div:has(> img:only-child),
+  :root[style*="readium-experimentalZoom-on"]:not([style*="readium-deprecatedFontSize-on"]):not([style*="readium-iOSPatch-on"])[style*="--USER__fontSize"] div:has(> video:only-child),
+  :root[style*="readium-experimentalZoom-on"]:not([style*="readium-deprecatedFontSize-on"]):not([style*="readium-iOSPatch-on"])[style*="--USER__fontSize"] div:has(> svg:only-child),
+  :root[style*="readium-experimentalZoom-on"]:not([style*="readium-deprecatedFontSize-on"]):not([style*="readium-iOSPatch-on"])[style*="--USER__fontSize"] div:has(> canvas:only-child),
+  :root[style*="readium-experimentalZoom-on"]:not([style*="readium-deprecatedFontSize-on"]):not([style*="readium-iOSPatch-on"])[style*="--USER__fontSize"] div:has(> iframe:only-child),
+  :root[style*="readium-experimentalZoom-on"]:not([style*="readium-deprecatedFontSize-on"]):not([style*="readium-iOSPatch-on"])[style*="--USER__fontSize"] div:has(> audio:only-child),
+  :root[style*="readium-experimentalZoom-on"]:not([style*="readium-deprecatedFontSize-on"]):not([style*="readium-iOSPatch-on"])[style*="--USER__fontSize"] table{
     zoom:calc(100% / var(--USER__fontSize)) !important;
   }
 
-  :root:not([style*="readium-deprecatedFontSize-on"]):not([style*="readium-iOSPatch-on"])[style*="--USER__fontSize"] figcaption,
-  :root:not([style*="readium-deprecatedFontSize-on"]):not([style*="readium-iOSPatch-on"])[style*="--USER__fontSize"] caption,
-  :root:not([style*="readium-deprecatedFontSize-on"]):not([style*="readium-iOSPatch-on"])[style*="--USER__fontSize"] td,
-  :root:not([style*="readium-deprecatedFontSize-on"]):not([style*="readium-iOSPatch-on"])[style*="--USER__fontSize"] th{
+  :root[style*="readium-experimentalZoom-on"]:not([style*="readium-deprecatedFontSize-on"]):not([style*="readium-iOSPatch-on"])[style*="--USER__fontSize"] figcaption,
+  :root[style*="readium-experimentalZoom-on"]:not([style*="readium-deprecatedFontSize-on"]):not([style*="readium-iOSPatch-on"])[style*="--USER__fontSize"] caption,
+  :root[style*="readium-experimentalZoom-on"]:not([style*="readium-deprecatedFontSize-on"]):not([style*="readium-iOSPatch-on"])[style*="--USER__fontSize"] td,
+  :root[style*="readium-experimentalZoom-on"]:not([style*="readium-deprecatedFontSize-on"]):not([style*="readium-iOSPatch-on"])[style*="--USER__fontSize"] th{
     zoom:var(--USER__fontSize) !important;
   }
 }
diff --git a/css/dist/rtl/ReadiumCSS-before.css b/css/dist/rtl/ReadiumCSS-before.css
index 9d90c47..86935a9 100644
--- a/css/dist/rtl/ReadiumCSS-before.css
+++ b/css/dist/rtl/ReadiumCSS-before.css
@@ -1,5 +1,5 @@
 /*!
- * Readium CSS v.2.0.0-beta.22
+ * Readium CSS v.2.0.0-beta.23
  * Copyright (c) 2017–2025. Readium Foundation. All rights reserved.
  * Use of this source code is governed by a BSD-style license which is detailed in the
  * LICENSE file present in the project repository where this source code is maintained.
diff --git a/css/dist/rtl/ReadiumCSS-default.css b/css/dist/rtl/ReadiumCSS-default.css
index 65e4a53..846e39f 100644
--- a/css/dist/rtl/ReadiumCSS-default.css
+++ b/css/dist/rtl/ReadiumCSS-default.css
@@ -1,5 +1,5 @@
 /*!
- * Readium CSS v.2.0.0-beta.22
+ * Readium CSS v.2.0.0-beta.23
  * Copyright (c) 2017–2025. Readium Foundation. All rights reserved.
  * Use of this source code is governed by a BSD-style license which is detailed in the
  * LICENSE file present in the project repository where this source code is maintained.
diff --git a/css/dist/webPub/ReadiumCSS-webPub.css b/css/dist/webPub/ReadiumCSS-webPub.css
index 4d59b84..a877602 100644
--- a/css/dist/webPub/ReadiumCSS-webPub.css
+++ b/css/dist/webPub/ReadiumCSS-webPub.css
@@ -1,5 +1,5 @@
 /*!
- * Readium CSS v.2.0.0-beta.22
+ * Readium CSS v.2.0.0-beta.23
  * Copyright (c) 2017–2025. Readium Foundation. All rights reserved.
  * Use of this source code is governed by a BSD-style license which is detailed in the
  * LICENSE file present in the project repository where this source code is maintained.
@@ -107,26 +107,26 @@
 
 @supports selector(figure:has(> img)){
 
-  :root:not([style*="readium-iOSPatch-on"])[style*="--USER__zoom"] figure:has(> img),
-  :root:not([style*="readium-iOSPatch-on"])[style*="--USER__zoom"] figure:has(> video),
-  :root:not([style*="readium-iOSPatch-on"])[style*="--USER__zoom"] figure:has(> svg),
-  :root:not([style*="readium-iOSPatch-on"])[style*="--USER__zoom"] figure:has(> canvas),
-  :root:not([style*="readium-iOSPatch-on"])[style*="--USER__zoom"] figure:has(> iframe),
-  :root:not([style*="readium-iOSPatch-on"])[style*="--USER__zoom"] figure:has(> audio),
-  :root:not([style*="readium-iOSPatch-on"])[style*="--USER__zoom"] div:has(> img),
-  :root:not([style*="readium-iOSPatch-on"])[style*="--USER__zoom"] div:has(> video),
-  :root:not([style*="readium-iOSPatch-on"])[style*="--USER__zoom"] div:has(> svg),
-  :root:not([style*="readium-iOSPatch-on"])[style*="--USER__zoom"] div:has(> canvas),
-  :root:not([style*="readium-iOSPatch-on"])[style*="--USER__zoom"] div:has(> iframe),
-  :root:not([style*="readium-iOSPatch-on"])[style*="--USER__zoom"] div:has(> audio),
-  :root:not([style*="readium-iOSPatch-on"])[style*="--USER__zoom"] table{
+  :root[style*="readium-experimentalZoom-on"]:not([style*="readium-iOSPatch-on"])[style*="--USER__zoom"] figure:has(> img),
+  :root[style*="readium-experimentalZoom-on"]:not([style*="readium-iOSPatch-on"])[style*="--USER__zoom"] figure:has(> video),
+  :root[style*="readium-experimentalZoom-on"]:not([style*="readium-iOSPatch-on"])[style*="--USER__zoom"] figure:has(> svg),
+  :root[style*="readium-experimentalZoom-on"]:not([style*="readium-iOSPatch-on"])[style*="--USER__zoom"] figure:has(> canvas),
+  :root[style*="readium-experimentalZoom-on"]:not([style*="readium-iOSPatch-on"])[style*="--USER__zoom"] figure:has(> iframe),
+  :root[style*="readium-experimentalZoom-on"]:not([style*="readium-iOSPatch-on"])[style*="--USER__zoom"] figure:has(> audio),
+  :root[style*="readium-experimentalZoom-on"]:not([style*="readium-iOSPatch-on"])[style*="--USER__zoom"] div:has(> img:only-child),
+  :root[style*="readium-experimentalZoom-on"]:not([style*="readium-iOSPatch-on"])[style*="--USER__zoom"] div:has(> video:only-child),
+  :root[style*="readium-experimentalZoom-on"]:not([style*="readium-iOSPatch-on"])[style*="--USER__zoom"] div:has(> svg:only-child),
+  :root[style*="readium-experimentalZoom-on"]:not([style*="readium-iOSPatch-on"])[style*="--USER__zoom"] div:has(> canvas:only-child),
+  :root[style*="readium-experimentalZoom-on"]:not([style*="readium-iOSPatch-on"])[style*="--USER__zoom"] div:has(> iframe:only-child),
+  :root[style*="readium-experimentalZoom-on"]:not([style*="readium-iOSPatch-on"])[style*="--USER__zoom"] div:has(> audio:only-child),
+  :root[style*="readium-experimentalZoom-on"]:not([style*="readium-iOSPatch-on"])[style*="--USER__zoom"] table{
     zoom:calc(100% / var(--USER__zoom)) !important;
   }
 
-  :root:not([style*="readium-iOSPatch-on"])[style*="--USER__zoom"] figcaption,
-  :root:not([style*="readium-iOSPatch-on"])[style*="--USER__zoom"] caption,
-  :root:not([style*="readium-iOSPatch-on"])[style*="--USER__zoom"] td,
-  :root:not([style*="readium-iOSPatch-on"])[style*="--USER__zoom"] th{
+  :root[style*="readium-experimentalZoom-on"]:not([style*="readium-iOSPatch-on"])[style*="--USER__zoom"] figcaption,
+  :root[style*="readium-experimentalZoom-on"]:not([style*="readium-iOSPatch-on"])[style*="--USER__zoom"] caption,
+  :root[style*="readium-experimentalZoom-on"]:not([style*="readium-iOSPatch-on"])[style*="--USER__zoom"] td,
+  :root[style*="readium-experimentalZoom-on"]:not([style*="readium-iOSPatch-on"])[style*="--USER__zoom"] th{
     zoom:var(--USER__zoom) !important;
   }
 }
diff --git a/css/src/modules/user-settings-submodules/ReadiumCSS-fontSize_pref.css b/css/src/modules/user-settings-submodules/ReadiumCSS-fontSize_pref.css
index 03ec2f7..0ae61f7 100644
--- a/css/src/modules/user-settings-submodules/ReadiumCSS-fontSize_pref.css
+++ b/css/src/modules/user-settings-submodules/ReadiumCSS-fontSize_pref.css
@@ -15,26 +15,26 @@
 }
 
 @supports selector(figure:has(> img)) {
-  :root:not(:--deprecated-font-size):not(:--iOS-patch)[style*="--USER__fontSize"] figure:has(> img),
-  :root:not(:--deprecated-font-size):not(:--iOS-patch)[style*="--USER__fontSize"] figure:has(> video),
-  :root:not(:--deprecated-font-size):not(:--iOS-patch)[style*="--USER__fontSize"] figure:has(> svg),
-  :root:not(:--deprecated-font-size):not(:--iOS-patch)[style*="--USER__fontSize"] figure:has(> canvas),
-  :root:not(:--deprecated-font-size):not(:--iOS-patch)[style*="--USER__fontSize"] figure:has(> iframe),
-  :root:not(:--deprecated-font-size):not(:--iOS-patch)[style*="--USER__fontSize"] figure:has(> audio),
-  :root:not(:--deprecated-font-size):not(:--iOS-patch)[style*="--USER__fontSize"] div:has(> img),
-  :root:not(:--deprecated-font-size):not(:--iOS-patch)[style*="--USER__fontSize"] div:has(> video),
-  :root:not(:--deprecated-font-size):not(:--iOS-patch)[style*="--USER__fontSize"] div:has(> svg),
-  :root:not(:--deprecated-font-size):not(:--iOS-patch)[style*="--USER__fontSize"] div:has(> canvas),
-  :root:not(:--deprecated-font-size):not(:--iOS-patch)[style*="--USER__fontSize"] div:has(> iframe),
-  :root:not(:--deprecated-font-size):not(:--iOS-patch)[style*="--USER__fontSize"] div:has(> audio),
-  :root:not(:--deprecated-font-size):not(:--iOS-patch)[style*="--USER__fontSize"] table {
+  :root:--experimental-zoom:not(:--deprecated-font-size):not(:--iOS-patch)[style*="--USER__fontSize"] figure:has(> img),
+  :root:--experimental-zoom:not(:--deprecated-font-size):not(:--iOS-patch)[style*="--USER__fontSize"] figure:has(> video),
+  :root:--experimental-zoom:not(:--deprecated-font-size):not(:--iOS-patch)[style*="--USER__fontSize"] figure:has(> svg),
+  :root:--experimental-zoom:not(:--deprecated-font-size):not(:--iOS-patch)[style*="--USER__fontSize"] figure:has(> canvas),
+  :root:--experimental-zoom:not(:--deprecated-font-size):not(:--iOS-patch)[style*="--USER__fontSize"] figure:has(> iframe),
+  :root:--experimental-zoom:not(:--deprecated-font-size):not(:--iOS-patch)[style*="--USER__fontSize"] figure:has(> audio),
+  :root:--experimental-zoom:not(:--deprecated-font-size):not(:--iOS-patch)[style*="--USER__fontSize"] div:has(> img:only-child),
+  :root:--experimental-zoom:not(:--deprecated-font-size):not(:--iOS-patch)[style*="--USER__fontSize"] div:has(> video:only-child),
+  :root:--experimental-zoom:not(:--deprecated-font-size):not(:--iOS-patch)[style*="--USER__fontSize"] div:has(> svg:only-child),
+  :root:--experimental-zoom:not(:--deprecated-font-size):not(:--iOS-patch)[style*="--USER__fontSize"] div:has(> canvas:only-child),
+  :root:--experimental-zoom:not(:--deprecated-font-size):not(:--iOS-patch)[style*="--USER__fontSize"] div:has(> iframe:only-child),
+  :root:--experimental-zoom:not(:--deprecated-font-size):not(:--iOS-patch)[style*="--USER__fontSize"] div:has(> audio:only-child),
+  :root:--experimental-zoom:not(:--deprecated-font-size):not(:--iOS-patch)[style*="--USER__fontSize"] table {
     zoom: calc(100% / var(--USER__fontSize)) !important;
   }
 
-  :root:not(:--deprecated-font-size):not(:--iOS-patch)[style*="--USER__fontSize"] figcaption,
-  :root:not(:--deprecated-font-size):not(:--iOS-patch)[style*="--USER__fontSize"] caption,
-  :root:not(:--deprecated-font-size):not(:--iOS-patch)[style*="--USER__fontSize"] td,
-  :root:not(:--deprecated-font-size):not(:--iOS-patch)[style*="--USER__fontSize"] th {
+  :root:--experimental-zoom:not(:--deprecated-font-size):not(:--iOS-patch)[style*="--USER__fontSize"] figcaption,
+  :root:--experimental-zoom:not(:--deprecated-font-size):not(:--iOS-patch)[style*="--USER__fontSize"] caption,
+  :root:--experimental-zoom:not(:--deprecated-font-size):not(:--iOS-patch)[style*="--USER__fontSize"] td,
+  :root:--experimental-zoom:not(:--deprecated-font-size):not(:--iOS-patch)[style*="--USER__fontSize"] th {
     zoom: var(--USER__fontSize) !important;
   }
 }
diff --git a/css/src/modules/user-settings-submodules/ReadiumCSS-webPubZoom_pref.css b/css/src/modules/user-settings-submodules/ReadiumCSS-webPubZoom_pref.css
index 9489c1e..c2c4350 100644
--- a/css/src/modules/user-settings-submodules/ReadiumCSS-webPubZoom_pref.css
+++ b/css/src/modules/user-settings-submodules/ReadiumCSS-webPubZoom_pref.css
@@ -15,26 +15,26 @@
 }
 
 @supports selector(figure:has(> img)) {
-  :root:not(:--iOS-patch)[style*="--USER__zoom"] figure:has(> img),
-  :root:not(:--iOS-patch)[style*="--USER__zoom"] figure:has(> video),
-  :root:not(:--iOS-patch)[style*="--USER__zoom"] figure:has(> svg),
-  :root:not(:--iOS-patch)[style*="--USER__zoom"] figure:has(> canvas),
-  :root:not(:--iOS-patch)[style*="--USER__zoom"] figure:has(> iframe),
-  :root:not(:--iOS-patch)[style*="--USER__zoom"] figure:has(> audio),
-  :root:not(:--iOS-patch)[style*="--USER__zoom"] div:has(> img),
-  :root:not(:--iOS-patch)[style*="--USER__zoom"] div:has(> video),
-  :root:not(:--iOS-patch)[style*="--USER__zoom"] div:has(> svg),
-  :root:not(:--iOS-patch)[style*="--USER__zoom"] div:has(> canvas),
-  :root:not(:--iOS-patch)[style*="--USER__zoom"] div:has(> iframe),
-  :root:not(:--iOS-patch)[style*="--USER__zoom"] div:has(> audio),
-  :root:not(:--iOS-patch)[style*="--USER__zoom"] table {
+  :root:--experimental-zoom:not(:--iOS-patch)[style*="--USER__zoom"] figure:has(> img),
+  :root:--experimental-zoom:not(:--iOS-patch)[style*="--USER__zoom"] figure:has(> video),
+  :root:--experimental-zoom:not(:--iOS-patch)[style*="--USER__zoom"] figure:has(> svg),
+  :root:--experimental-zoom:not(:--iOS-patch)[style*="--USER__zoom"] figure:has(> canvas),
+  :root:--experimental-zoom:not(:--iOS-patch)[style*="--USER__zoom"] figure:has(> iframe),
+  :root:--experimental-zoom:not(:--iOS-patch)[style*="--USER__zoom"] figure:has(> audio),
+  :root:--experimental-zoom:not(:--iOS-patch)[style*="--USER__zoom"] div:has(> img:only-child),
+  :root:--experimental-zoom:not(:--iOS-patch)[style*="--USER__zoom"] div:has(> video:only-child),
+  :root:--experimental-zoom:not(:--iOS-patch)[style*="--USER__zoom"] div:has(> svg:only-child),
+  :root:--experimental-zoom:not(:--iOS-patch)[style*="--USER__zoom"] div:has(> canvas:only-child),
+  :root:--experimental-zoom:not(:--iOS-patch)[style*="--USER__zoom"] div:has(> iframe:only-child),
+  :root:--experimental-zoom:not(:--iOS-patch)[style*="--USER__zoom"] div:has(> audio:only-child),
+  :root:--experimental-zoom:not(:--iOS-patch)[style*="--USER__zoom"] table {
     zoom: calc(100% / var(--USER__zoom)) !important;
   }
 
-  :root:not(:--iOS-patch)[style*="--USER__zoom"] figcaption,
-  :root:not(:--iOS-patch)[style*="--USER__zoom"] caption,
-  :root:not(:--iOS-patch)[style*="--USER__zoom"] td,
-  :root:not(:--iOS-patch)[style*="--USER__zoom"] th {
+  :root:--experimental-zoom:not(:--iOS-patch)[style*="--USER__zoom"] figcaption,
+  :root:--experimental-zoom:not(:--iOS-patch)[style*="--USER__zoom"] caption,
+  :root:--experimental-zoom:not(:--iOS-patch)[style*="--USER__zoom"] td,
+  :root:--experimental-zoom:not(:--iOS-patch)[style*="--USER__zoom"] th {
     zoom: var(--USER__zoom) !important;
   }
 }
diff --git a/package.json b/package.json
index 6480c4b..5b6878b 100644
--- a/package.json
+++ b/package.json
@@ -1,7 +1,7 @@
 {
   "name": "@readium/css",
   "description": "A set of reference stylesheets for EPUB Reading Systems",
-  "version": "2.0.0-beta.22",
+  "version": "2.0.0-beta.23",
   "homepage": "https://github.com/readium/css",
   "license": "BSD-3-Clause",
   "keywords": [