diff --git a/src/wp-admin/css/theme.css b/src/wp-admin/css/theme.css
deleted file mode 100644
index 13eefb5366..0000000000
--- a/src/wp-admin/css/theme.css
+++ /dev/null
@@ -1,876 +0,0 @@
-.theme-browser .themes {
-	clear: both;
-	padding: 0 0 100px;
-}
-
-.themes-php .wrap h2 {
-	float: left;
-	margin-bottom: 15px;
-}
-
-.themes-php .wrap h2 .button {
-	margin-left: 20px;
-}
-
-.themes-php .theme-count {
-	color: #fff;
-	border-radius: 30px;
-	background: #777;
-	font-size: 14px;
-	padding: 4px 10px;
-	font-weight: 600;
-	margin-left: 5px;
-	margin-right: 20px;
-	position: relative;
-	top: -3px;
-}
-
-/* Position admin messages */
-.themes-php div.updated {
-	margin: 0 0 20px 0;
-	clear: both;
-}
-
-.themes-php div.updated a {
-	text-decoration: underline;
-}
-
-/**
- * Main theme element
- * (has flexible margins)
- */
-.theme {
-	cursor: pointer;
-	float: left;
-	margin: 0 5% 4% 0;
-	position: relative;
-	width: 30%;
-	border: 1px solid #dedede;
-	-webkit-box-shadow: 0 1px 1px -1px rgba(0,0,0,0.1);
-	box-shadow:         0 1px 1px -1px rgba(0,0,0,0.1);
-	-webkit-box-sizing: border-box;
-	-moz-box-sizing:    border-box;
-	box-sizing:         border-box;
-}
-
-.theme:nth-child(3n) {
-	margin-right: 0;
-}
-
-.theme:hover,
-.theme:focus {
-	cursor: pointer;
-}
-
-.theme .theme-name {
-	font-size: 15px;
-	font-weight: 600;
-	margin: 0;
-	padding: 15px;
-	-webkit-box-shadow: inset 0 1px 0 rgba(0,0,0,0.1);
-	box-shadow:         inset 0 1px 0 rgba(0,0,0,0.1);
-	overflow: hidden;
-	white-space: nowrap;
-	text-overflow: ellipsis;
-}
-
-.theme-name {
-	background: #fff;
-	background: rgba(255,255,255,0.65);
-}
-
-/* Activate and Customize buttons, shown on hover */
-.theme .theme-actions {
-	opacity: 0;
-	-webkit-transition: opacity 0.1s ease-in-out;
-	transition:         opacity 0.1s ease-in-out;
-	position: absolute;
-	bottom: 0;
-	right: 0;
-	height: 38px;
-	padding: 9px 10px 0 10px;
-	background: rgba(244, 244, 244, 0.7);
-	border-left: 1px solid rgba(0,0,0,0.05);
-}
-
-.theme:hover .theme-actions {
-	opacity: 1;
-}
-
-.theme .theme-actions .button-primary {
-	margin-right: 3px;
-}
-
-.theme .theme-actions .button-secondary {
-	float: none;
-	margin-left: 3px;
-}
-
-/**
- * Theme Screenshot
- *
- * Has a fixed aspect ratio of 1.5 to 1 regardless of screenshot size
- * It is also responsive.
- */
-.theme .theme-screenshot {
-	display: block;
-	overflow: hidden;
-	position: relative;
-	-webkit-transition: opacity 0.2s ease-in-out;
-	transition:         opacity 0.2s ease-in-out;
-}
-
-.theme .theme-screenshot:after {
-	content: '';
-	display: block;
-	padding-top: 66%; /* using a 3/2 aspect ratio */
-}
-
-.theme .theme-screenshot img {
-	height: auto;
-	position: absolute;
-	left: 0;
-	top: 0;
-	width: 100%;
-	-webkit-transform: translateZ( 0 ); /* Prevents rendering bugs in Chrome */
-	-webkit-transition: opacity 0.2s ease-in-out;
-	transition:         opacity 0.2s ease-in-out;
-}
-
-.theme:after {
-	display: block;
-	opacity: 0;
-	content: '\f348';
-	-webkit-font-smoothing: antialiased;
-	font: normal 64px/1 'dashicons';
-	vertical-align: middle;
-	text-align: center;
-	color: #000;
-	position: absolute;
-	top: 0;
-	left: 0;
-	right: 0;
-	padding-top: 24%;
-	text-shadow: 0 1px 20px rgba(255,255,255,0.9);
-	-webkit-transition: opacity 0.2s ease-in-out;
-	transition:         opacity 0.2s ease-in-out;
-}
-
-.theme:hover:after {
-	opacity: 0.6;
-}
-
-.theme:hover .theme-screenshot {
-	background: #fff;
-}
-
-.theme:hover .theme-screenshot img {
-	opacity: 0.4;
-}
-
-/**
- * Displays a theme update notice
- * when an update is available.
- */
-.theme .theme-update {
-	background: #d54e21;
-	background: rgba(213, 78, 33, 0.95);
-	color: #fff;
-	display: block;
-	font-size: 13px;
-	font-weight: 400;
-	height: 48px;
-	line-height: 48px;
-	padding: 0 10px;
-	position: absolute;
-	top: 0;
-	right: 0;
-	left: 0;
-	border-bottom: 1px solid rgba(0,0,0,0.25);
-	overflow: hidden;
-}
-
-.theme .theme-update:before {
-	content: '\f113';
-	display: inline-block;
-	font: normal 20px/1 'dashicons';
-	margin: 0 6px 0 0;
-	opacity: 0.8;
-	position: relative;
-	top: 5px;
-	speak: none;
-	-webkit-font-smoothing: antialiased;
-}
-
-
-/**
- * The currently active theme
- */
-.theme.active {
-}
-
-.theme.active .theme-screenshot {
-}
-
-.theme.active .theme-name {
-	background: #0074a2;
-	color: #fff;
-	-webkit-box-shadow: inset 0 1px 1px rgba(0,0,0,0.5);
-	box-shadow:         inset 0 1px 1px rgba(0,0,0,0.5);
-}
-
-.theme.active .theme-actions {
-	top: 0;
-	left: 0;
-	background: #2f2f2f;
-	height: 48px;
-	opacity: 1;
-	line-height: 48px;
-	padding: 0 10px;
-	z-index: 1;
-}
-
-.theme.active .theme-actions .button {
-	float: right;
-	margin-top: 10px;
-}
-
-.theme.active .current-label {
-	font-size: 13px;
-	font-weight: 400;
-	color: #ccc;
-	margin-left: 5px;
-}
-
-.theme.active .theme-update {
-	top: 48px;
-}
-
-.theme .theme-author {
-	background: #222;
-	color: #eee;
-	display: none;
-	font-size: 14px;
-	margin: 0 10px;
-	padding: 5px 10px;
-	position: absolute;
-	bottom: 56px;
-}
-
-.theme.display-author .theme-author {
-	display: block;
-}
-
-.theme.display-author .theme-author a {
-	color: inherit;
-	text-decoration: none;
-}
-
-/**
- * Add new theme
- */
-.theme-browser .add-new-theme {
-	border: none;
-	box-shadow: none;
-}
-
-.theme-browser .add-new-theme a {
-	color: #999;
-	text-decoration: none;
-	display: block;
-	position: relative;
-	z-index: 1;
-}
-
-.theme-browser .add-new-theme:after {
-	display: block;
-	content: '';
-	opacity: 1;
-	background: rgba(0, 0, 0, 0);
-	position: absolute;
-	top: 0;
-	left: 0;
-	right: 0;
-	bottom: 0;
-	padding: 10% 0 0 0;
-	text-shadow: none;
-	border: 5px dashed rgba(0, 0, 0, 0.1);
-	-webkit-transition: opacity 0.2s ease-in-out;
-	transition:         opacity 0.2s ease-in-out;
-	-webkit-box-sizing: border-box;
-	-moz-box-sizing:    border-box;
-	box-sizing:         border-box;
-}
-
-.theme-browser .add-new-theme span:after {
-	background: rgba(153, 153, 153, 0.1);
-	border-radius: 50%;
-	display: inline-block;
-	content: '\f132';
-	-webkit-font-smoothing: antialiased;
-	font: normal 74px/115px 'dashicons';
-	width: 100px;
-	height: 100px;
-	vertical-align: middle;
-	text-align: center;
-	color: rgb(153, 153, 153);
-	position: absolute;
-	top: 30%;
-	left: 50%;
-	margin-left: -50px;
-	text-indent: -4px;
-	padding: 0;
-	text-shadow: none;
-	z-index:4;
-}
-
-.theme-browser .add-new-theme:hover .theme-screenshot {
-	background: none;
-}
-
-.theme-browser .add-new-theme:hover span:after {
-	background: #fff;
-	color: #0074a2;
-}
-
-.theme-browser .add-new-theme:hover:after {
-	border-color: transparent;
-	color: #fff;
-	background: #0074a2;
-}
-
-.theme-browser .add-new-theme .theme-name {
-	background: none;
-	text-align: center;
-	box-shadow: none;
-	font-weight: 400;
-	position: relative;
-	top: -50px;
-}
-
-.theme-browser .add-new-theme:hover .theme-name {
-	color: #fff;
-	z-index: 2;
-}
-
-/*
- * The search form
- */
-.themes-php .theme-search {
-	position: relative;
-	top: -2px;
-	left: 20px;
-	font-size: 16px;
-	font-weight: 300;
-	line-height: 1.5;
-}
-
-/**
- * Theme Overlay
- * Shown when clicking a theme
- */
-.theme-overlay .theme-backdrop {
-	position: absolute;
-	left: -20px;
-	right: 0;
-	top: 0;
-	bottom: 0;
-	background: rgba( 238, 238, 238, 0.9 );
-	z-index: 10;
-}
-
-body.theme-overlay-open {
-	overflow: hidden;
-}
-
-.theme-overlay .theme-utility {
-	position: absolute;
-	top: 0;
-	left: 0;
-	right: 0;
-	border-bottom: 1px solid #eee;
-}
-
-.theme-overlay .back {
-	cursor: pointer;
-	height: 48px;
-	width: 50px;
-	text-align: center;
-	float: right;
-	border-left: 1px solid #eee;
-}
-
-.theme-overlay .back:hover {
-	background: #333;
-}
-
-.theme-overlay .back:hover:before {
-	color: #fff;
-}
-
-.theme-overlay .back:before {
-	font: normal 30px/48px 'dashicons' !important;
-	color: #bbb;
-	display: inline-block;
-	content: '\f335';
-	font-weight: 300;
-}
-
-/* Left and right navigation */
-.theme-overlay .right,
-.theme-overlay .left {
-	cursor: pointer;
-	height: 48px;
-	width: 54px;
-	float: left;
-	text-align: center;
-	border-right: 1px solid #eee;
-	-webkit-user-select: none;
-	-moz-user-select:    none;
-	-ms-user-select:     none;
-	user-select:         none;
-}
-
-.theme-overlay .right:hover,
-.theme-overlay .left:hover {
-	background: #333;
-}
-
-.theme-overlay .right:hover:before,
-.theme-overlay .left:hover:before {
-	color: #fff;
-}
-
-.theme-overlay .left:before {
-	content: '\f341';
-}
-
-.theme-overlay .right:before {
-	content: '\f345';
-}
-
-.theme-overlay .right:before,
-.theme-overlay .left:before {
-	font: normal 16px/54px 'dashicons' !important;
-	display: inline;
-	font-weight: 300;
-}
-
-.theme-overlay .theme-wrap {
-	clear: both;
-	position: fixed;
-	top: 120px;
-	left: 190px;
-	right: 40px;
-	bottom: 80px;
-	overflow: auto;
-	background: #fff;
-	padding: 88px 40px 110px 40px;
-	-webkit-box-shadow: 0 1px 20px 5px rgba(0, 0, 0, 0.1), 0 0 0 1px rgba(0,0,0,0.1);
-	box-shadow:         0 1px 20px 5px rgba(0, 0, 0, 0.1), 0 0 0 1px rgba(0,0,0,0.1);
-	z-index: 20;
-}
-
-.theme-overlay .theme-wrap:after {
-	content: ".";
-	display: block;
-	height: 0;
-	clear: both;
-	visibility: hidden;
-}
-
-.theme-overlay .theme-actions {
-	position: fixed;
-	text-align: center;
-	bottom: 80px;
-	left: 190px;
-	right: 40px;
-	padding: 20px 25px;
-	background: rgba(243, 243, 243 ,0.9);
-	border-top: 1px solid rgba(0,0,0,0.1);
-	z-index: 30;
-}
-
-.theme-overlay.active .theme-actions {
-}
-
-.theme-overlay .theme-actions a {
-	margin-right: 5px;
-	margin-bottom: 0;
-	font-size: 16px;
-	line-height: 37px;
-	height: 37px;
-	padding: 0 20px 1px 20px;
-}
-
-.theme-overlay .theme-actions .delete-theme {
-	border-radius: 2px;
-	color: #a00;
-	font-size: 14px;
-	padding: 0 10px;
-	position: absolute;
-	right: 10px;
-	bottom: 20px;
-	text-decoration: none;
-}
-
-.theme-overlay .theme-actions .delete-theme:hover {
-	background: #d54e21;
-	color: #fff;
-}
-
-.theme-overlay .theme-actions .active-theme,
-.theme-overlay.active .theme-actions .inactive-theme {
-	display: none;
-}
-
-.theme-overlay .theme-actions .inactive-theme,
-.theme-overlay.active .theme-actions .active-theme {
-	display: block;
-}
-
-/**
- * Theme Screenshots gallery
- */
-.theme-overlay .theme-screenshots {
-	float: left;
-	margin: 0 30px 0 0;
-	width: 55%;
-	text-align: center;
-}
-
-/* First screenshot, shown big */
-.theme-overlay .screenshot {
-	border: 1px solid #fff;
-	-webkit-box-sizing: border-box;
-	-moz-box-sizing:    border-box;
-	box-sizing:         border-box;
-	overflow: hidden;
-	position: relative;
-	-webkit-box-shadow: 0 0 0 1px rgba(0,0,0,0.2);
-	box-shadow:         0 0 0 1px rgba(0,0,0,0.2);
-}
-
-.theme-overlay .screenshot:after {
-	content: '';
-	display: block;
-	padding-top: 66.66666%; /* using a 3/2 aspect ratio */
-}
-
-.theme-overlay .screenshot img {
-	cursor: pointer;
-	height: auto;
-	position: absolute;
-	left: 0;
-	top: 0;
-	width: 100%;
-}
-
-/* Other screenshots, shown small and square */
-.theme-overlay .screenshot.thumb {
-	background: #ccc;
-	border: 1px solid #eee;
-	float: none;
-	display: inline-block;
-	margin: 10px 5px 0;
-	width: 140px;
-	height: 80px;
-}
-
-.theme-overlay .screenshot.thumb:after {
-	content: '';
-	display: block;
-	padding-top: 100%; /* using a 1/1 aspect ratio */
-}
-
-.theme-overlay .screenshot.thumb img {
-	cursor: pointer;
-	height: auto;
-	position: absolute;
-	left: 0;
-	top: 0;
-	width: 100%;
-	height: auto;
-}
-
-.theme-overlay .screenshot.selected {
-	background: transparent;
-	border: 2px solid #2ea2cc;
-}
-
-.theme-overlay .screenshot.selected img {
-	opacity: 0.8;
-}
-
-/* No screenshot placeholder */
-.theme .theme-screenshot.blank,
-.theme-overlay .screenshot.blank {
-	background-image: url(data:image/png;base64,iVBORw0KGgoAAAANSUhEUgAAAAgAAAAICAYAAADED76LAAAALElEQVQYGWO8d+/efwYkoKioiMRjYGBC4WHhUK6A8T8QIJt8//59ZC493AAAQssKpBK4F5AAAAAASUVORK5CYII=);
-}
-
-/**
- * Theme heading information
- */
-.theme-overlay .theme-info {
-	width: 40%;
-	float: left;
-}
-
-.theme-overlay .current-label {
-	background: #333;
-	color: #fff;
-	font-size: 11px;
-	display: inline-block;
-	padding: 2px 8px;
-	border-radius: 2px;
-	margin: 0 0 -10px;
-	-webkit-user-select: none;
-	-moz-user-select:    none;
-	-ms-user-select:     none;
-	user-select:         none;
-}
-
-.theme-overlay .theme-name {
-	color: #222;
-	font-size: 32px;
-	font-weight: 100;
-	margin: 10px 0 0;
-	line-height: 1.3;
-}
-
-.theme-overlay .theme-version {
-	color: #999;
-	font-size: 13px;
-	font-weight: 400;
-	float: none;
-	display: inline-block;
-	margin-left: 10px;
-	-webkit-user-select: none;
-	-moz-user-select:    none;
-	-ms-user-select:     none;
-	user-select:         none;
-}
-
-.theme-overlay .theme-author {
-	color: #686868;
-	font-size: 16px;
-	font-weight: 400;
-	margin: 15px 0 25px;
-}
-
-.theme-overlay .theme-author a {
-	color: inherit;
-	text-decoration: none;
-}
-
-.theme-overlay .theme-description {
-	color: #555;
-	font-size: 15px;
-	font-weight: 400;
-	line-height: 1.5;
-	margin: 30px 0 0 0;
-}
-
-.theme-overlay .theme-tags {
-	border-top: 3px solid #eee;
-	color: #888;
-	font-size: 13px;
-	font-weight: 400;
-	margin: 30px 0 0 0;
-	padding-top: 20px;
-	text-transform: capitalize;
-}
-
-.theme-overlay .theme-tags span {
-	color: #444;
-	font-weight: bold;
-	margin-right: 5px;
-}
-
-.theme-overlay .theme-actions {
-}
-
-/* Theme Updates info */
-.theme-overlay .theme-update-message {
-	background: #fefaf7;
-	border: 1px solid #eee;
-	border-left: 4px solid #d54e21;
-	border-radius: 3px;
-	padding: 5px 20px 10px;
-}
-
-.theme-overlay .theme-update {
-	color: #222;
-	font-size: 18px;
-	display: inline-block;
-	line-height: 40px;
-	margin: 0;
-}
-
-.theme-overlay .parent-theme {
-	background: #f7fcfe;
-	border: 1px solid #eee;
-	border-left: 4px solid #2ea2cc;
-	font-size: 14px;
-	font-weight: normal;
-	margin-top: 30px;
-	padding: 10px 10px 10px 20px;
-}
-
-.theme-overlay .parent-theme strong {
-	font-weight: 700;
-}
-
-/**
- * Basic Responsive structure...
- *
- * Shuffles theme columns around based on screen width
- */
-
-@media only screen and (min-width: 1700px) {
-	.theme {
-		width: 22.7%;
-		margin: 0 3% 3% 0;
-	}
-
-	.theme:nth-child(3n) {
-		margin-right: 3%;
-	}
-
-	.theme:nth-child(4n) {
-		margin-right: 0;
-	}
-
-	.theme-overlay .theme-wrap,
-	.theme-overlay .theme-actions {
-		right: 15%;
-		left: 22%;
-	}
-}
-
-@media only screen and (max-width: 1200px) {
-	.theme {
-		width: 47.5%;
-		margin-right: 0;
-	}
-
-	.theme:nth-child(even) {
-		margin-right: 0;
-	}
-
-	.theme:nth-child(odd) {
-		margin-right: 5%;
-	}
-}
-
-/* Admin menu is folded */
-@media only screen and (max-width: 900px) {
-	.theme-overlay .theme-wrap,
-	.theme-overlay .theme-actions {
-		left: 76px;
-	}
-}
-
-@media only screen and (max-width: 780px) {
-	.theme.active .theme-actions .button {
-		margin-top: 6px;
-		margin-right: -3px
-	}
-
-	.theme-overlay .theme-wrap {
-		top: 45px;
-		right: 0;
-		bottom: 0;
-		left: 0;
-		padding: 70px 20px 100px;
-	}
-
-	.theme-overlay .theme-actions {
-		right: 0;
-		bottom: 0;
-		left: 0;
-		text-align: left;
-		padding: 10px;
-	}
-
-	.theme-overlay .theme-screenshots {
-		width: 40%;
-	}
-
-	.theme-overlay .theme-info {
-		width: 50%;
-	}
-
-	.theme-overlay .theme-actions .delete-theme {
-		bottom: 10px;
-	}
-}
-
-@media only screen and (max-width: 650px) {
-	.theme {
-		width: 100%;
-		margin-right: 0;
-	}
-
-	.theme:hover .theme-actions {
-		display: none;
-	}
-
-	.theme:nth-child(2n),
-	.theme:nth-child(3n) {
-		margin-right: 0;
-	}
-
-	.theme-overlay .theme-update,
-	.theme-overlay .theme-description {
-		margin-left: 0;
-	}
-
-	.theme-overlay.active .theme-actions .active-theme .button:nth-child(3n) {
-		display: none;
-	}
-
-	.theme.active .theme-actions .button {
-		margin-top: 6px;
-		margin-right: 0;
-	}
-
-	.theme-overlay .theme-screenshots {
-		width: 100%;
-		float: none;
-	}
-
-	.theme-overlay .theme-info {
-		width: 100%;
-	}
-
-	.theme-overlay .theme-author {
-		margin: 5px 0 15px 0;
-	}
-
-	.theme-overlay .theme-version {
-		margin-left: 0;
-		position: absolute;
-		top: 18px;
-		left: 130px;
-	}
-
-	.theme-overlay .current-label {
-		margin-top: 10px;
-		font-size: 13px;
-	}
-
-	.themes-php .wrap h2 {
-		width: 100%;
-	}
-
-	.themes-php .theme-search {
-		float: none;
-		clear: both;
-		left: 0;
-		top: 0;
-		right: 0;
-		margin: 10px 0;
-		width: 100%;
-	}
-}
diff --git a/src/wp-admin/css/wp-admin.css b/src/wp-admin/css/wp-admin.css
index e766386402..714a2b70f0 100644
--- a/src/wp-admin/css/wp-admin.css
+++ b/src/wp-admin/css/wp-admin.css
@@ -6288,6 +6288,883 @@ span.imgedit-scale-warn {
   16.1 - Manage Themes
 ------------------------------------------------------------------------------*/
 
+.theme-browser .themes {
+	clear: both;
+	padding: 0 0 100px;
+}
+
+.themes-php .wrap h2 {
+	float: left;
+	margin-bottom: 15px;
+}
+
+.themes-php .wrap h2 .button {
+	margin-left: 20px;
+}
+
+.themes-php .theme-count {
+	color: #fff;
+	border-radius: 30px;
+	background: #777;
+	font-size: 14px;
+	padding: 4px 10px;
+	font-weight: 600;
+	margin-left: 5px;
+	margin-right: 20px;
+	position: relative;
+	top: -3px;
+}
+
+/* Position admin messages */
+.themes-php div.updated {
+	margin: 0 0 20px 0;
+	clear: both;
+}
+
+.themes-php div.updated a {
+	text-decoration: underline;
+}
+
+/**
+ * Main theme element
+ * (has flexible margins)
+ */
+.theme {
+	cursor: pointer;
+	float: left;
+	margin: 0 5% 4% 0;
+	position: relative;
+	width: 30%;
+	border: 1px solid #dedede;
+	-webkit-box-shadow: 0 1px 1px -1px rgba(0,0,0,0.1);
+	box-shadow:         0 1px 1px -1px rgba(0,0,0,0.1);
+	-webkit-box-sizing: border-box;
+	-moz-box-sizing:    border-box;
+	box-sizing:         border-box;
+}
+
+.theme:nth-child(3n) {
+	margin-right: 0;
+}
+
+.theme:hover,
+.theme:focus {
+	cursor: pointer;
+}
+
+.theme .theme-name {
+	font-size: 15px;
+	font-weight: 600;
+	margin: 0;
+	padding: 15px;
+	-webkit-box-shadow: inset 0 1px 0 rgba(0,0,0,0.1);
+	box-shadow:         inset 0 1px 0 rgba(0,0,0,0.1);
+	overflow: hidden;
+	white-space: nowrap;
+	text-overflow: ellipsis;
+}
+
+.theme-name {
+	background: #fff;
+	background: rgba(255,255,255,0.65);
+}
+
+/* Activate and Customize buttons, shown on hover */
+.theme .theme-actions {
+	opacity: 0;
+	-webkit-transition: opacity 0.1s ease-in-out;
+	transition:         opacity 0.1s ease-in-out;
+	position: absolute;
+	bottom: 0;
+	right: 0;
+	height: 38px;
+	padding: 9px 10px 0 10px;
+	background: rgba(244, 244, 244, 0.7);
+	border-left: 1px solid rgba(0,0,0,0.05);
+}
+
+.theme:hover .theme-actions {
+	opacity: 1;
+}
+
+.theme .theme-actions .button-primary {
+	margin-right: 3px;
+}
+
+.theme .theme-actions .button-secondary {
+	float: none;
+	margin-left: 3px;
+}
+
+/**
+ * Theme Screenshot
+ *
+ * Has a fixed aspect ratio of 1.5 to 1 regardless of screenshot size
+ * It is also responsive.
+ */
+.theme .theme-screenshot {
+	display: block;
+	overflow: hidden;
+	position: relative;
+	-webkit-transition: opacity 0.2s ease-in-out;
+	transition:         opacity 0.2s ease-in-out;
+}
+
+.theme .theme-screenshot:after {
+	content: '';
+	display: block;
+	padding-top: 66%; /* using a 3/2 aspect ratio */
+}
+
+.theme .theme-screenshot img {
+	height: auto;
+	position: absolute;
+	left: 0;
+	top: 0;
+	width: 100%;
+	-webkit-transform: translateZ( 0 ); /* Prevents rendering bugs in Chrome */
+	-webkit-transition: opacity 0.2s ease-in-out;
+	transition:         opacity 0.2s ease-in-out;
+}
+
+.theme:after {
+	display: block;
+	opacity: 0;
+	content: '\f348';
+	-webkit-font-smoothing: antialiased;
+	font: normal 64px/1 'dashicons';
+	vertical-align: middle;
+	text-align: center;
+	color: #000;
+	position: absolute;
+	top: 0;
+	left: 0;
+	right: 0;
+	padding-top: 24%;
+	text-shadow: 0 1px 20px rgba(255,255,255,0.9);
+	-webkit-transition: opacity 0.2s ease-in-out;
+	transition:         opacity 0.2s ease-in-out;
+}
+
+.theme:hover:after {
+	opacity: 0.6;
+}
+
+.theme:hover .theme-screenshot {
+	background: #fff;
+}
+
+.theme:hover .theme-screenshot img {
+	opacity: 0.4;
+}
+
+/**
+ * Displays a theme update notice
+ * when an update is available.
+ */
+.theme .theme-update {
+	background: #d54e21;
+	background: rgba(213, 78, 33, 0.95);
+	color: #fff;
+	display: block;
+	font-size: 13px;
+	font-weight: 400;
+	height: 48px;
+	line-height: 48px;
+	padding: 0 10px;
+	position: absolute;
+	top: 0;
+	right: 0;
+	left: 0;
+	border-bottom: 1px solid rgba(0,0,0,0.25);
+	overflow: hidden;
+}
+
+.theme .theme-update:before {
+	content: '\f113';
+	display: inline-block;
+	font: normal 20px/1 'dashicons';
+	margin: 0 6px 0 0;
+	opacity: 0.8;
+	position: relative;
+	top: 5px;
+	speak: none;
+	-webkit-font-smoothing: antialiased;
+}
+
+
+/**
+ * The currently active theme
+ */
+.theme.active {
+}
+
+.theme.active .theme-screenshot {
+}
+
+.theme.active .theme-name {
+	background: #0074a2;
+	color: #fff;
+	-webkit-box-shadow: inset 0 1px 1px rgba(0,0,0,0.5);
+	box-shadow:         inset 0 1px 1px rgba(0,0,0,0.5);
+}
+
+.theme.active .theme-actions {
+	top: 0;
+	left: 0;
+	background: #2f2f2f;
+	height: 48px;
+	opacity: 1;
+	line-height: 48px;
+	padding: 0 10px;
+	z-index: 1;
+}
+
+.theme.active .theme-actions .button {
+	float: right;
+	margin-top: 10px;
+}
+
+.theme.active .current-label {
+	font-size: 13px;
+	font-weight: 400;
+	color: #ccc;
+	margin-left: 5px;
+}
+
+.theme.active .theme-update {
+	top: 48px;
+}
+
+.theme .theme-author {
+	background: #222;
+	color: #eee;
+	display: none;
+	font-size: 14px;
+	margin: 0 10px;
+	padding: 5px 10px;
+	position: absolute;
+	bottom: 56px;
+}
+
+.theme.display-author .theme-author {
+	display: block;
+}
+
+.theme.display-author .theme-author a {
+	color: inherit;
+	text-decoration: none;
+}
+
+/**
+ * Add new theme
+ */
+.theme-browser .add-new-theme {
+	border: none;
+	box-shadow: none;
+}
+
+.theme-browser .add-new-theme a {
+	color: #999;
+	text-decoration: none;
+	display: block;
+	position: relative;
+	z-index: 1;
+}
+
+.theme-browser .add-new-theme:after {
+	display: block;
+	content: '';
+	opacity: 1;
+	background: rgba(0, 0, 0, 0);
+	position: absolute;
+	top: 0;
+	left: 0;
+	right: 0;
+	bottom: 0;
+	padding: 10% 0 0 0;
+	text-shadow: none;
+	border: 5px dashed rgba(0, 0, 0, 0.1);
+	-webkit-transition: opacity 0.2s ease-in-out;
+	transition:         opacity 0.2s ease-in-out;
+	-webkit-box-sizing: border-box;
+	-moz-box-sizing:    border-box;
+	box-sizing:         border-box;
+}
+
+.theme-browser .add-new-theme span:after {
+	background: rgba(153, 153, 153, 0.1);
+	border-radius: 50%;
+	display: inline-block;
+	content: '\f132';
+	-webkit-font-smoothing: antialiased;
+	font: normal 74px/115px 'dashicons';
+	width: 100px;
+	height: 100px;
+	vertical-align: middle;
+	text-align: center;
+	color: rgb(153, 153, 153);
+	position: absolute;
+	top: 30%;
+	left: 50%;
+	margin-left: -50px;
+	text-indent: -4px;
+	padding: 0;
+	text-shadow: none;
+	z-index:4;
+}
+
+.theme-browser .add-new-theme:hover .theme-screenshot {
+	background: none;
+}
+
+.theme-browser .add-new-theme:hover span:after {
+	background: #fff;
+	color: #0074a2;
+}
+
+.theme-browser .add-new-theme:hover:after {
+	border-color: transparent;
+	color: #fff;
+	background: #0074a2;
+}
+
+.theme-browser .add-new-theme .theme-name {
+	background: none;
+	text-align: center;
+	box-shadow: none;
+	font-weight: 400;
+	position: relative;
+	top: -50px;
+}
+
+.theme-browser .add-new-theme:hover .theme-name {
+	color: #fff;
+	z-index: 2;
+}
+
+/*
+ * The search form
+ */
+.themes-php .theme-search {
+	position: relative;
+	top: -2px;
+	left: 20px;
+	font-size: 16px;
+	font-weight: 300;
+	line-height: 1.5;
+}
+
+/**
+ * Theme Overlay
+ * Shown when clicking a theme
+ */
+.theme-overlay .theme-backdrop {
+	position: absolute;
+	left: -20px;
+	right: 0;
+	top: 0;
+	bottom: 0;
+	background: rgba( 238, 238, 238, 0.9 );
+	z-index: 10;
+}
+
+body.theme-overlay-open {
+	overflow: hidden;
+}
+
+.theme-overlay .theme-utility {
+	position: absolute;
+	top: 0;
+	left: 0;
+	right: 0;
+	border-bottom: 1px solid #eee;
+}
+
+.theme-overlay .back {
+	cursor: pointer;
+	height: 48px;
+	width: 50px;
+	text-align: center;
+	float: right;
+	border-left: 1px solid #eee;
+}
+
+.theme-overlay .back:hover {
+	background: #333;
+}
+
+.theme-overlay .back:hover:before {
+	color: #fff;
+}
+
+.theme-overlay .back:before {
+	font: normal 30px/48px 'dashicons' !important;
+	color: #bbb;
+	display: inline-block;
+	content: '\f335';
+	font-weight: 300;
+}
+
+/* Left and right navigation */
+.theme-overlay .right,
+.theme-overlay .left {
+	cursor: pointer;
+	height: 48px;
+	width: 54px;
+	float: left;
+	text-align: center;
+	border-right: 1px solid #eee;
+	-webkit-user-select: none;
+	-moz-user-select:    none;
+	-ms-user-select:     none;
+	user-select:         none;
+}
+
+.theme-overlay .right:hover,
+.theme-overlay .left:hover {
+	background: #333;
+}
+
+.theme-overlay .right:hover:before,
+.theme-overlay .left:hover:before {
+	color: #fff;
+}
+
+.theme-overlay .left:before {
+	content: '\f341';
+}
+
+.theme-overlay .right:before {
+	content: '\f345';
+}
+
+.theme-overlay .right:before,
+.theme-overlay .left:before {
+	font: normal 16px/54px 'dashicons' !important;
+	display: inline;
+	font-weight: 300;
+}
+
+.theme-overlay .theme-wrap {
+	clear: both;
+	position: fixed;
+	top: 120px;
+	left: 190px;
+	right: 40px;
+	bottom: 80px;
+	overflow: auto;
+	background: #fff;
+	padding: 88px 40px 110px 40px;
+	-webkit-box-shadow: 0 1px 20px 5px rgba(0, 0, 0, 0.1), 0 0 0 1px rgba(0,0,0,0.1);
+	box-shadow:         0 1px 20px 5px rgba(0, 0, 0, 0.1), 0 0 0 1px rgba(0,0,0,0.1);
+	z-index: 20;
+}
+
+.theme-overlay .theme-wrap:after {
+	content: ".";
+	display: block;
+	height: 0;
+	clear: both;
+	visibility: hidden;
+}
+
+.theme-overlay .theme-actions {
+	position: fixed;
+	text-align: center;
+	bottom: 80px;
+	left: 190px;
+	right: 40px;
+	padding: 20px 25px;
+	background: rgba(243, 243, 243 ,0.9);
+	border-top: 1px solid rgba(0,0,0,0.1);
+	z-index: 30;
+}
+
+.theme-overlay.active .theme-actions {
+}
+
+.theme-overlay .theme-actions a {
+	margin-right: 5px;
+	margin-bottom: 0;
+	font-size: 16px;
+	line-height: 37px;
+	height: 37px;
+	padding: 0 20px 1px 20px;
+}
+
+.theme-overlay .theme-actions .delete-theme {
+	border-radius: 2px;
+	color: #a00;
+	font-size: 14px;
+	padding: 0 10px;
+	position: absolute;
+	right: 10px;
+	bottom: 20px;
+	text-decoration: none;
+}
+
+.theme-overlay .theme-actions .delete-theme:hover {
+	background: #d54e21;
+	color: #fff;
+}
+
+.theme-overlay .theme-actions .active-theme,
+.theme-overlay.active .theme-actions .inactive-theme {
+	display: none;
+}
+
+.theme-overlay .theme-actions .inactive-theme,
+.theme-overlay.active .theme-actions .active-theme {
+	display: block;
+}
+
+/**
+ * Theme Screenshots gallery
+ */
+.theme-overlay .theme-screenshots {
+	float: left;
+	margin: 0 30px 0 0;
+	width: 55%;
+	text-align: center;
+}
+
+/* First screenshot, shown big */
+.theme-overlay .screenshot {
+	border: 1px solid #fff;
+	-webkit-box-sizing: border-box;
+	-moz-box-sizing:    border-box;
+	box-sizing:         border-box;
+	overflow: hidden;
+	position: relative;
+	-webkit-box-shadow: 0 0 0 1px rgba(0,0,0,0.2);
+	box-shadow:         0 0 0 1px rgba(0,0,0,0.2);
+}
+
+.theme-overlay .screenshot:after {
+	content: '';
+	display: block;
+	padding-top: 66.66666%; /* using a 3/2 aspect ratio */
+}
+
+.theme-overlay .screenshot img {
+	cursor: pointer;
+	height: auto;
+	position: absolute;
+	left: 0;
+	top: 0;
+	width: 100%;
+}
+
+/* Other screenshots, shown small and square */
+.theme-overlay .screenshot.thumb {
+	background: #ccc;
+	border: 1px solid #eee;
+	float: none;
+	display: inline-block;
+	margin: 10px 5px 0;
+	width: 140px;
+	height: 80px;
+}
+
+.theme-overlay .screenshot.thumb:after {
+	content: '';
+	display: block;
+	padding-top: 100%; /* using a 1/1 aspect ratio */
+}
+
+.theme-overlay .screenshot.thumb img {
+	cursor: pointer;
+	height: auto;
+	position: absolute;
+	left: 0;
+	top: 0;
+	width: 100%;
+	height: auto;
+}
+
+.theme-overlay .screenshot.selected {
+	background: transparent;
+	border: 2px solid #2ea2cc;
+}
+
+.theme-overlay .screenshot.selected img {
+	opacity: 0.8;
+}
+
+/* No screenshot placeholder */
+.theme .theme-screenshot.blank,
+.theme-overlay .screenshot.blank {
+	background-image: url(data:image/png;base64,iVBORw0KGgoAAAANSUhEUgAAAAgAAAAICAYAAADED76LAAAALElEQVQYGWO8d+/efwYkoKioiMRjYGBC4WHhUK6A8T8QIJt8//59ZC493AAAQssKpBK4F5AAAAAASUVORK5CYII=);
+}
+
+/**
+ * Theme heading information
+ */
+.theme-overlay .theme-info {
+	width: 40%;
+	float: left;
+}
+
+.theme-overlay .current-label {
+	background: #333;
+	color: #fff;
+	font-size: 11px;
+	display: inline-block;
+	padding: 2px 8px;
+	border-radius: 2px;
+	margin: 0 0 -10px;
+	-webkit-user-select: none;
+	-moz-user-select:    none;
+	-ms-user-select:     none;
+	user-select:         none;
+}
+
+.theme-overlay .theme-name {
+	color: #222;
+	font-size: 32px;
+	font-weight: 100;
+	margin: 10px 0 0;
+	line-height: 1.3;
+}
+
+.theme-overlay .theme-version {
+	color: #999;
+	font-size: 13px;
+	font-weight: 400;
+	float: none;
+	display: inline-block;
+	margin-left: 10px;
+	-webkit-user-select: none;
+	-moz-user-select:    none;
+	-ms-user-select:     none;
+	user-select:         none;
+}
+
+.theme-overlay .theme-author {
+	color: #686868;
+	font-size: 16px;
+	font-weight: 400;
+	margin: 15px 0 25px;
+}
+
+.theme-overlay .theme-author a {
+	color: inherit;
+	text-decoration: none;
+}
+
+.theme-overlay .theme-description {
+	color: #555;
+	font-size: 15px;
+	font-weight: 400;
+	line-height: 1.5;
+	margin: 30px 0 0 0;
+}
+
+.theme-overlay .theme-tags {
+	border-top: 3px solid #eee;
+	color: #888;
+	font-size: 13px;
+	font-weight: 400;
+	margin: 30px 0 0 0;
+	padding-top: 20px;
+	text-transform: capitalize;
+}
+
+.theme-overlay .theme-tags span {
+	color: #444;
+	font-weight: bold;
+	margin-right: 5px;
+}
+
+.theme-overlay .theme-actions {
+}
+
+/* Theme Updates info */
+.theme-overlay .theme-update-message {
+	background: #fefaf7;
+	border: 1px solid #eee;
+	border-left: 4px solid #d54e21;
+	border-radius: 3px;
+	padding: 5px 20px 10px;
+}
+
+.theme-overlay .theme-update {
+	color: #222;
+	font-size: 18px;
+	display: inline-block;
+	line-height: 40px;
+	margin: 0;
+}
+
+.theme-overlay .parent-theme {
+	background: #f7fcfe;
+	border: 1px solid #eee;
+	border-left: 4px solid #2ea2cc;
+	font-size: 14px;
+	font-weight: normal;
+	margin-top: 30px;
+	padding: 10px 10px 10px 20px;
+}
+
+.theme-overlay .parent-theme strong {
+	font-weight: 700;
+}
+
+/**
+ * Basic Responsive structure...
+ *
+ * Shuffles theme columns around based on screen width
+ */
+
+@media only screen and (min-width: 1700px) {
+	.theme {
+		width: 22.7%;
+		margin: 0 3% 3% 0;
+	}
+
+	.theme:nth-child(3n) {
+		margin-right: 3%;
+	}
+
+	.theme:nth-child(4n) {
+		margin-right: 0;
+	}
+
+	.theme-overlay .theme-wrap,
+	.theme-overlay .theme-actions {
+		right: 15%;
+		left: 22%;
+	}
+}
+
+@media only screen and (max-width: 1200px) {
+	.theme {
+		width: 47.5%;
+		margin-right: 0;
+	}
+
+	.theme:nth-child(even) {
+		margin-right: 0;
+	}
+
+	.theme:nth-child(odd) {
+		margin-right: 5%;
+	}
+}
+
+/* Admin menu is folded */
+@media only screen and (max-width: 900px) {
+	.theme-overlay .theme-wrap,
+	.theme-overlay .theme-actions {
+		left: 76px;
+	}
+}
+
+@media only screen and (max-width: 780px) {
+	.theme.active .theme-actions .button {
+		margin-top: 6px;
+		margin-right: -3px
+	}
+
+	.theme-overlay .theme-wrap {
+		top: 45px;
+		right: 0;
+		bottom: 0;
+		left: 0;
+		padding: 70px 20px 100px;
+	}
+
+	.theme-overlay .theme-actions {
+		right: 0;
+		bottom: 0;
+		left: 0;
+		text-align: left;
+		padding: 10px;
+	}
+
+	.theme-overlay .theme-screenshots {
+		width: 40%;
+	}
+
+	.theme-overlay .theme-info {
+		width: 50%;
+	}
+
+	.theme-overlay .theme-actions .delete-theme {
+		bottom: 10px;
+	}
+}
+
+@media only screen and (max-width: 650px) {
+	.theme {
+		width: 100%;
+		margin-right: 0;
+	}
+
+	.theme:hover .theme-actions {
+		display: none;
+	}
+
+	.theme:nth-child(2n),
+	.theme:nth-child(3n) {
+		margin-right: 0;
+	}
+
+	.theme-overlay .theme-update,
+	.theme-overlay .theme-description {
+		margin-left: 0;
+	}
+
+	.theme-overlay.active .theme-actions .active-theme .button:nth-child(3n) {
+		display: none;
+	}
+
+	.theme.active .theme-actions .button {
+		margin-top: 6px;
+		margin-right: 0;
+	}
+
+	.theme-overlay .theme-screenshots {
+		width: 100%;
+		float: none;
+	}
+
+	.theme-overlay .theme-info {
+		width: 100%;
+	}
+
+	.theme-overlay .theme-author {
+		margin: 5px 0 15px 0;
+	}
+
+	.theme-overlay .theme-version {
+		margin-left: 0;
+		position: absolute;
+		top: 18px;
+		left: 130px;
+	}
+
+	.theme-overlay .current-label {
+		margin-top: 10px;
+		font-size: 13px;
+	}
+
+	.themes-php .wrap h2 {
+		width: 100%;
+	}
+
+	.themes-php .theme-search {
+		float: none;
+		clear: both;
+		left: 0;
+		top: 0;
+		right: 0;
+		margin: 10px 0;
+		width: 100%;
+	}
+}
+
 .broken-themes {
 	clear: both;
 }
diff --git a/src/wp-admin/themes.php b/src/wp-admin/themes.php
index f883d78da9..faf4bc04bc 100644
--- a/src/wp-admin/themes.php
+++ b/src/wp-admin/themes.php
@@ -104,7 +104,6 @@ wp_localize_script( 'theme', '_wpThemeSettings', array(
 ) );
 
 add_thickbox();
-wp_enqueue_style( 'theme' );
 wp_enqueue_script( 'theme' );
 wp_enqueue_script( 'customize-loader' );
 
diff --git a/src/wp-includes/script-loader.php b/src/wp-includes/script-loader.php
index fff7366cdf..9ea2337091 100644
--- a/src/wp-includes/script-loader.php
+++ b/src/wp-includes/script-loader.php
@@ -594,7 +594,6 @@ function wp_default_styles( &$styles ) {
 	// do not refer to these directly, the right one is queued by the above "meta" colors handle
 	$styles->add( 'colors-fresh', "/wp-admin/css/colors-fresh$suffix.css", array( 'wp-admin', 'buttons' ) );
 
-	$styles->add( 'theme', "/wp-admin/css/theme.css" );
 	$styles->add( 'media', "/wp-admin/css/media$suffix.css" );
 	$styles->add( 'install', "/wp-admin/css/install$suffix.css", array('buttons') );
 	$styles->add( 'thickbox', '/wp-includes/js/thickbox/thickbox.css', array( 'dashicons' ), '20121105' );