diff -r 48c4eec2b7e6 -r 8c2e4d02f4ef wp/wp-admin/css/themes.css
--- a/wp/wp-admin/css/themes.css	Fri Sep 05 18:40:08 2025 +0200
+++ b/wp/wp-admin/css/themes.css	Fri Sep 05 18:52:52 2025 +0200
@@ -11,6 +11,10 @@
 	overflow-y: scroll;
 }
 
+.themes-php #adminmenuwrap {
+	z-index: 10001; /* above Theme Overlay */
+}
+
 body.js .theme-browser.search-loading {
 	display: none;
 }
@@ -372,6 +376,7 @@
 	background: #f0f0f1;
 	background: rgba(240, 240, 241, 0.9);
 	z-index: 10000; /* Over WP Pointers. */
+	min-height: calc(100vh - var(--wp-admin--admin-bar--height, 32px));
 }
 
 .theme-overlay .theme-header {
@@ -915,6 +920,10 @@
 		padding-left: 4%;
 		padding-right: 4%;
 	}
+
+	.theme-install-php .wp-filter .filter-count {
+		margin-top: 10px;
+	}
 }
 
 @media only screen and (max-width: 650px) {
@@ -935,6 +944,7 @@
 	.theme-overlay .theme-screenshots {
 		width: 100%;
 		float: none;
+		margin: 0;
 	}
 
 	.theme-overlay .theme-info {
@@ -1638,12 +1648,14 @@
 }
 
 /* Animations */
-.wp-full-overlay,
-.wp-full-overlay-sidebar,
-.wp-full-overlay .collapse-sidebar,
-.wp-full-overlay-main {
-	transition-property: left, right, top, bottom, width, margin;
-	transition-duration: 0.2s;
+@media (prefers-reduced-motion: no-preference) {
+	.wp-full-overlay,
+	.wp-full-overlay-sidebar,
+	.wp-full-overlay .collapse-sidebar,
+	.wp-full-overlay-main {
+		transition-property: left, right, top, bottom, width, margin;
+		transition-duration: 0.2s;
+	}
 }
 
 /* Device/preview size toggles */