diff --git a/wp-admin/css/colors-classic.dev.css b/wp-admin/css/colors-classic.dev.css
index 38e3cccb70..3457c713e6 100644
--- a/wp-admin/css/colors-classic.dev.css
+++ b/wp-admin/css/colors-classic.dev.css
@@ -2026,10 +2026,6 @@ body.press-this ul.category-tabs li.tabs a {
 	border-color: #DFDFDF;
 }
 
-#theme-information .action-button {
-	border-top-color: #DFDFDF;
-}
-
 div.widgets-sortables,
 #widgets-left .inactive {
 	background-color: #f7fcfe;
diff --git a/wp-admin/css/colors-fresh.dev.css b/wp-admin/css/colors-fresh.dev.css
index 17c3356e9b..8742228e69 100644
--- a/wp-admin/css/colors-fresh.dev.css
+++ b/wp-admin/css/colors-fresh.dev.css
@@ -1661,10 +1661,6 @@ body.press-this ul.category-tabs li.tabs a {
 	border-color: #DFDFDF;
 }
 
-#theme-information .action-button {
-	border-top-color: #DFDFDF;
-}
-
 div.widgets-sortables,
 #widgets-left .inactive,
 #available-widgets .widget-holder {
diff --git a/wp-admin/css/wp-admin-rtl.dev.css b/wp-admin/css/wp-admin-rtl.dev.css
index a15756c6ea..2232a943a6 100644
--- a/wp-admin/css/wp-admin-rtl.dev.css
+++ b/wp-admin/css/wp-admin-rtl.dev.css
@@ -2217,19 +2217,6 @@ div.star a:visited {
 	left: 0;
 }
 
-#theme-information .theme-preview-img {
-	float: right;
-	margin: 5px 15px 10px 25px;
-}
-
-#theme-information .action-button #cancel {
-	float: right;
-}
-
-#theme-information .action-button #install {
-	float: left;
-}
-
 .feature-filter .feature-group {
 	float: right;
 }
diff --git a/wp-admin/css/wp-admin.dev.css b/wp-admin/css/wp-admin.dev.css
index 7ff47736ff..1b50abfbb9 100644
--- a/wp-admin/css/wp-admin.dev.css
+++ b/wp-admin/css/wp-admin.dev.css
@@ -7440,49 +7440,6 @@ h3 span {
 	line-height: 180%;
 }
 
-#theme-information .available-theme,
-.available-theme {
-	padding: 20px 15px;
-}
-
-#theme-information .available-theme {
-	overflow: visible;
-	width: 440px;
-}
-
-#theme-information .theme-preview-img {
-	float: left;
-	margin: 5px 25px 10px 15px;
-	width: 300px;
-}
-
-#theme-information .action-button {
-	border-top-width: 1px;
-	border-top-style: solid;
-	margin: 10px 5px 0;
-}
-
-#theme-information .action-button #cancel,
-#theme-information .action-button #install {
-	margin: 10px 5px;
-}
-
-#theme-information .action-button #cancel {
-	float: left;
-}
-
-#theme-information .action-button #install {
-	float: right;
-}
-
-#theme-information .available-theme h3 {
-	margin: 1em 0;
-}
-
-body#theme-information {
-	height: auto;
-}
-
 .feature-filter {
 	padding: 8px 12px 0;
 }