Index: src/wp-admin/css/common.css
IDEA additional info:
Subsystem: com.intellij.openapi.diff.impl.patch.CharsetEP
<+>UTF-8
===================================================================
--- src/wp-admin/css/common.css	(revision 40849)
+++ src/wp-admin/css/common.css	(revision )
@@ -3816,6 +3816,9 @@
 		margin: 10px 10px 0 0;
 		border-bottom: 1px solid #ccc;
 	}
+	.wp-filter .search-form input[type="search"] {
+		width: 100%;
+	}
 }
 
 @media screen and (max-width: 320px) {