Ticket #32296: 32296.diff

src/wp-admin/css/themes.css

@@ -1309 +1309 @@
         -moz-box-sizing: border-box;
         box-sizing: border-box;
         position: fixed;
-        width: 300px;
+        min-width: 300px;
+        max-width: 600px;
+        width: 18%;
         height: 100%;
         top: 0;
         bottom: 0;
@@ -1338 +1340 @@
         margin-left: -300px;
 }
 
+@media screen and (min-width: 1667px) {
+        .wp-full-overlay.expanded {
+                margin-left: 18%;
+        }
+
+        .wp-full-overlay.collapsed .wp-full-overlay-sidebar {
+                margin-left: -18%;
+        }
+}
+
+@media screen and (min-width: 3333px) {
+        .wp-full-overlay.expanded {
+                margin-left: 600px;
+        }
+
+        .wp-full-overlay.collapsed .wp-full-overlay-sidebar {
+                margin-left: -600px;
+        }
+}
+
 .wp-full-overlay-sidebar:after {
         content: '';
         display: block;