diff -r be944660c56a -r 3d72ae0968f4 wp/wp-includes/blocks/gallery/editor-rtl.css
--- a/wp/wp-includes/blocks/gallery/editor-rtl.css	Wed Sep 21 18:19:35 2022 +0200
+++ b/wp/wp-includes/blocks/gallery/editor-rtl.css	Tue Sep 27 16:37:53 2022 +0200
@@ -41,6 +41,12 @@
  * These variables do not appear to be used anywhere else.
  */
 /**
+*  Converts a hex value into the rgb equivalent.
+*
+* @param {string} hex - the hexadecimal value to convert
+* @return {string} comma separated rgb values
+*/
+/**
  * Breakpoint mixins
  */
 /**
@@ -68,27 +74,78 @@
 /**
  * Reset the WP Admin page styles for Gutenberg-like pages.
  */
-.wp-block-gallery li {
-  list-style-type: none;
+figure.wp-block-gallery {
+  display: block;
+}
+figure.wp-block-gallery.has-nested-images .components-drop-zone {
+  display: none;
+  pointer-events: none;
+}
+figure.wp-block-gallery > .blocks-gallery-caption {
+  flex: 0 0 100%;
+}
+figure.wp-block-gallery > .blocks-gallery-media-placeholder-wrapper {
+  flex-basis: 100%;
 }
-.wp-block-gallery .block-editor-media-placeholder.is-appender .components-placeholder__label {
+figure.wp-block-gallery .wp-block-image .components-notice.is-error {
+  display: block;
+}
+figure.wp-block-gallery .wp-block-image .components-notice__content {
+  margin: 4px 0;
+}
+figure.wp-block-gallery .wp-block-image .components-notice__dismiss {
+  position: absolute;
+  top: 0;
+  left: 5px;
+}
+figure.wp-block-gallery .block-editor-media-placeholder.is-appender .components-placeholder__label {
   display: none;
 }
-.wp-block-gallery .block-editor-media-placeholder.is-appender .block-editor-media-placeholder__button {
+figure.wp-block-gallery .block-editor-media-placeholder.is-appender .block-editor-media-placeholder__button {
   margin-bottom: 0;
 }
+figure.wp-block-gallery .block-editor-media-placeholder {
+  margin: 0;
+}
+figure.wp-block-gallery .block-editor-media-placeholder .components-placeholder__label {
+  display: flex;
+}
+figure.wp-block-gallery .block-editor-media-placeholder figcaption {
+  z-index: 2;
+}
+figure.wp-block-gallery .components-spinner {
+  position: absolute;
+  top: 50%;
+  right: 50%;
+  margin-top: -9px;
+  margin-right: -9px;
+}
 
-figure.wp-block-gallery {
-  display: block;
-  margin: 0;
+/**
+ * Gallery inspector controls settings.
+ */
+.gallery-settings-buttons .components-button:first-child {
+  margin-left: 8px;
 }
 
-.blocks-gallery-grid.blocks-gallery-grid {
-  padding-right: 0;
-  margin-right: 0;
-  margin-bottom: 0;
+.gallery-image-sizes .components-base-control__label {
+  display: block;
+  margin-bottom: 4px;
+}
+.gallery-image-sizes .gallery-image-sizes__loading {
+  display: flex;
+  align-items: center;
+  color: #757575;
+  font-size: 12px;
+}
+.gallery-image-sizes .components-spinner {
+  margin: 0 4px 0 8px;
 }
 
+/**
+ * Deprecated css past this point. This can be removed once all galleries are migrated
+ * to V2.
+ */
 .blocks-gallery-item figure:not(.is-selected):focus,
 .blocks-gallery-item img:focus {
   outline: none;
@@ -105,9 +162,6 @@
   z-index: 1;
   pointer-events: none;
 }
-.blocks-gallery-item figure.is-selected figcaption {
-  z-index: 2;
-}
 .blocks-gallery-item figure.is-transient img {
   opacity: 0.3;
 }
@@ -165,10 +219,19 @@
   left: -2px;
 }
 
-.blocks-gallery-item .components-spinner {
-  position: absolute;
-  top: 50%;
-  right: 50%;
-  margin-top: -9px;
-  margin-right: -9px;
+.wp-block-gallery ul.blocks-gallery-grid {
+  padding: 0;
+  margin: 0;
+}
+
+@media (min-width: 600px) {
+  .wp-block-update-gallery-modal {
+    max-width: 480px;
+  }
+}
+
+.wp-block-update-gallery-modal-buttons {
+  display: flex;
+  justify-content: flex-end;
+  gap: 12px;
 }
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