diff --git a/src/wp-admin/css/wp-admin.css b/src/wp-admin/css/wp-admin.css
index 470c8427bf..b6f1e61804 100644
--- a/src/wp-admin/css/wp-admin.css
+++ b/src/wp-admin/css/wp-admin.css
@@ -222,7 +222,6 @@ TABLE OF CONTENTS:
 	padding: 15px 23px 14px;
 	background: #f1f1f1;
 	color: #21759b;
-	border-radius: 3px;
 	z-index: 100000;
 	line-height: normal;
 	-webkit-box-shadow: 0 0 2px 2px rgba(0,0,0,.6);
@@ -2561,11 +2560,6 @@ html.wp-toolbar {
 	cursor: move;
 }
 
-.postbox.closed .hndle {
-	-webkit-border-radius: 3px;
-	border-radius: 3px;
-}
-
 .hndle a {
 	font-size: 11px;
 	font-weight: normal;
@@ -4804,8 +4798,6 @@ table.diff .diff-addedline ins {
 }
 
 .diff-meta {
-	-webkit-border-radius: 3px;
-	border-radius: 3px;
 	padding: 5px;
 	clear: both;
 	min-height: 32px;
@@ -6088,8 +6080,6 @@ span.imgedit-scale-warn {
 .imgedit-group {
 	border-width: 1px;
 	border-style: solid;
-	-webkit-border-radius: 3px;
-	border-radius: 3px;
 	margin-bottom: 8px;
 	padding: 2px 10px;
 }
@@ -7811,16 +7801,6 @@ body.press-this {
 	display: none !important;
 }
 
-.about-wrap p.about-notice {
-	background-color: #ffffe0;
-	border: 1px solid #e6db55;
-	margin: 5px 0 15px;
-	padding: 0.4em 0.8em;
-	border-radius: 3px;
-	-webkit-border-radius: 3px;
-}
-
-
 /* Typography */
 
 .about-wrap p {