diff -r 490d5cc509ed -r cf61fcea0001 wp/wp-admin/css/themes.css
--- a/wp/wp-admin/css/themes.css	Tue Jun 09 11:14:17 2015 +0000
+++ b/wp/wp-admin/css/themes.css	Mon Oct 14 17:39:30 2019 +0200
@@ -7,25 +7,27 @@
   16.1 - Manage Themes
 ------------------------------------------------------------------------------*/
 
+body.js .theme-browser.search-loading {
+	display: none;
+}
+
 .theme-browser .themes {
 	clear: both;
-	padding: 0 0 100px;
 }
 
-.themes-php .wrap h2 {
-	float: left;
+.themes-php:not(.network-admin) .wrap h1 {
 	margin-bottom: 15px;
 }
 
-.network-admin.themes-php .wrap h2 {
-	margin-bottom: 0;
-}
-
-.themes-php .wrap h2 .button {
+.themes-php .wrap h1 .button {
 	margin-left: 20px;
 }
 
 /* Search form */
+.themes-php .search-form {
+	display: inline;
+}
+
 .themes-php .wp-filter-search {
 	position: relative;
 	top: -2px;
@@ -38,15 +40,13 @@
 }
 
 /* Position admin messages */
-.themes-php div.updated,
-.themes-php div.error,
-.themes-php div.notice {
-	margin: 0 0 20px 0;
-	clear: both;
-}
-
-.themes-php div.updated a {
-	text-decoration: underline;
+.theme .notice,
+.theme .notice.is-dismissible {
+	left: 0;
+	margin: 0;
+	position: absolute;
+	right: 0;
+	top: 0;
 }
 
 /**
@@ -59,11 +59,8 @@
 	margin: 0 4% 4% 0;
 	position: relative;
 	width: 30.6%;
-	border: 1px solid #dedede;
-	-webkit-box-shadow: 0 1px 1px -1px rgba(0,0,0,0.1);
+	border: 1px solid #ddd;
 	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;
 }
 
@@ -87,7 +84,6 @@
 	height: 18px;
 	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;
@@ -100,13 +96,8 @@
 .theme-browser .theme .theme-actions {
 	-ms-filter: "progid:DXImageTransform.Microsoft.Alpha(Opacity=0)";
 	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;
+	height: auto;
 	background: rgba(244, 244, 244, 0.7);
 	border-left: 1px solid rgba(0,0,0,0.05);
 }
@@ -122,7 +113,7 @@
 	margin-right: 3px;
 }
 
-.theme-browser .theme .theme-actions .button-secondary {
+.theme-browser .theme .theme-actions .button {
 	float: none;
 	margin-left: 3px;
 }
@@ -137,12 +128,12 @@
 	display: block;
 	overflow: hidden;
 	position: relative;
-	-webkit-transition: opacity 0.2s ease-in-out;
+	-webkit-backface-visibility: hidden; /* Prevents flicker of the screenshot on hover. */
 	transition: opacity 0.2s ease-in-out;
 }
 
 .theme-browser .theme .theme-screenshot:after {
-	content: '';
+	content: "";
 	display: block;
 	padding-top: 66.66666%; /* using a 3/2 aspect ratio */
 }
@@ -153,7 +144,6 @@
 	left: 0;
 	top: 0;
 	width: 100%;
-	-webkit-transition: opacity 0.2s ease-in-out;
 	transition: opacity 0.2s ease-in-out;
 }
 
@@ -172,8 +162,8 @@
 	opacity: 0;
 	position: absolute;
 	top: 35%;
-	right: 25%;
-	left: 25%;
+	right: 20%;
+	left: 20%;
 	background: #23282d;
 	background: rgba(0,0,0,0.7);
 	color: #fff;
@@ -183,15 +173,12 @@
 	font-weight: 600;
 	padding: 15px 12px;
 	text-align: center;
-	-webkit-border-radius: 3px;
 	border-radius: 3px;
-	-webkit-transition: opacity 0.1s ease-in-out;
 	transition: opacity 0.1s ease-in-out;
 }
 
 .theme-browser .theme:focus {
 	border-color: #5b9dd9;
-	-webkit-box-shadow: 0 0 2px rgba( 30, 140, 190, 0.8 );
 	box-shadow: 0 0 2px rgba( 30, 140, 190, 0.8 );
 }
 
@@ -211,51 +198,13 @@
 }
 
 /**
- * Displays a theme update notice
- * when an update is available.
- */
-.theme-browser .theme .theme-update,
-.theme-browser .theme .theme-installed {
-	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-browser .theme .theme-update:before,
-.theme-browser .theme .theme-installed:before {
-	content: '\f463';
-	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-browser .theme.active .theme-name {
-	background: #2f2f2f;
+	background: #23282d;
 	color: #fff;
 	padding-right: 110px;
 	font-weight: 300;
-	-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);
 }
 
@@ -273,6 +222,21 @@
 	opacity: 1;
 }
 
+.theme-id-container {
+	position: relative;
+}
+
+.theme-browser .theme.active .theme-actions,
+.theme-browser .theme .theme-actions {
+	position: absolute;
+	top: 50%;
+	-webkit-transform: translateY(-50%);
+	transform: translateY(-50%);
+	right: 0;
+	padding: 10px 15px;
+	box-shadow: inset 0 1px 0 rgba(0,0,0,0.1);
+}
+
 .theme-browser .theme.active .theme-actions .button-primary {
 	margin-right: 0;
 }
@@ -302,12 +266,10 @@
  */
 .theme-browser .theme.add-new-theme {
 	border: none;
-	-webkit-box-shadow: none;
 	box-shadow: none;
 }
 
 .theme-browser .theme.add-new-theme a {
-	color: #999;
 	text-decoration: none;
 	display: block;
 	position: relative;
@@ -316,7 +278,7 @@
 
 .theme-browser .theme.add-new-theme a:after {
 	display: block;
-	content: '';
+	content: "";
 	background: transparent;
 	background: rgba(0, 0, 0, 0);
 	position: absolute;
@@ -328,20 +290,17 @@
 	text-shadow: none;
 	border: 5px dashed #d5d2ca;
 	border: 5px dashed rgba(0, 0, 0, 0.1);
-	-webkit-box-sizing: border-box;
-	-moz-box-sizing: border-box;
 	box-sizing: border-box;
 }
 
 .theme-browser .theme.add-new-theme span:after {
 	background: #e5e5e5;
 	background: rgba(153, 153, 153, 0.1);
-	-webkit-border-radius: 50%;
 	border-radius: 50%;
 	display: inline-block;
-	content: '\f132';
+	content: "\f132";
 	-webkit-font-smoothing: antialiased;
-	font: normal 74px/115px 'dashicons';
+	font: normal 74px/115px dashicons;
 	width: 100px;
 	height: 100px;
 	vertical-align: middle;
@@ -377,13 +336,12 @@
 	border-color: transparent;
 	color: #fff;
 	background: #0073aa;
-	content: '';
+	content: "";
 }
 
 .theme-browser .theme.add-new-theme .theme-name {
 	background: none;
 	text-align: center;
-	-webkit-box-shadow: none;
 	box-shadow: none;
 	font-weight: 400;
 	position: relative;
@@ -411,7 +369,7 @@
 	bottom: 0;
 	background: #f1f1f1;
 	background: rgba( 238, 238, 238, 0.9 );
-	z-index: 10;
+	z-index: 10000; /* Over WP Pointers. */
 }
 
 .theme-overlay .theme-header {
@@ -436,15 +394,14 @@
 	border: 0;
 	border-left: 1px solid #ddd;
 	background-color: transparent;
-	-webkit-transition: color .1s ease-in-out, background .1s ease-in-out;
 	transition: color .1s ease-in-out, background .1s ease-in-out;
 }
 
 .theme-overlay .theme-header .close:before {
-	font: normal 22px/50px 'dashicons' !important;
-	color: #777;
+	font: normal 22px/50px dashicons !important;
+	color: #72777c;
 	display: inline-block;
-	content: '\f335';
+	content: "\f335";
 	font-weight: 300;
 }
 
@@ -452,7 +409,7 @@
 .theme-overlay .theme-header .right,
 .theme-overlay .theme-header .left {
 	cursor: pointer;
-	color: #777;
+	color: #72777c;
 	background-color: transparent;
 	height: 48px;
 	width: 54px;
@@ -460,7 +417,6 @@
 	text-align: center;
 	border: 0;
 	border-right: 1px solid #ddd;
-	-webkit-transition: color .1s ease-in-out, background .1s ease-in-out;
 	transition: color .1s ease-in-out, background .1s ease-in-out;
 }
 
@@ -483,7 +439,6 @@
 .theme-overlay .theme-header .close:focus,
 .theme-overlay .theme-header .right:focus,
 .theme-overlay .theme-header .left:focus {
-    -webkit-box-shadow: none;
     box-shadow: none;
     outline: none;
 }
@@ -499,7 +454,7 @@
 
 .theme-overlay .theme-header .right:before,
 .theme-overlay .theme-header .left:before {
-	font: normal 20px/50px 'dashicons' !important;
+	font: normal 20px/50px dashicons !important;
 	display: inline;
 	font-weight: 300;
 }
@@ -512,8 +467,6 @@
 	content: "\f345";
 }
 
-
-
 .theme-overlay .theme-wrap {
 	clear: both;
 	position: fixed;
@@ -522,24 +475,13 @@
 	right: 30px;
 	bottom: 3%;
 	background: #fff;
-	-webkit-box-shadow: 0 1px 20px 5px rgba(0, 0, 0, 0.1);
 	box-shadow: 0 1px 20px 5px rgba(0, 0, 0, 0.1);
-	z-index: 20;
-	-webkit-box-sizing: border-box;
-	-moz-box-sizing: border-box;
+	z-index: 10000; /* Over WP Pointers. */
 	box-sizing: border-box;
 	-webkit-overflow-scrolling: touch;
 }
 
-.theme-overlay .theme-wrap:after {
-	content: ".";
-	display: block;
-	height: 0;
-	clear: both;
-	visibility: hidden;
-}
-
-body.folded .theme-overlay .theme-wrap {
+body.folded .theme-browser ~ .theme-overlay .theme-wrap {
 	left: 70px;
 }
 
@@ -552,13 +494,6 @@
 	overflow: auto;
 	padding: 2% 4%;
 }
-.theme-overlay .theme-about:after {
-	content: ".";
-	display: block;
-	height: 0;
-	clear: both;
-	visibility: hidden;
-}
 
 .theme-overlay .theme-actions {
 	position: absolute;
@@ -569,8 +504,6 @@
 	padding: 10px 25px 5px;
 	background: #f3f3f3;
 	z-index: 30;
-	-webkit-box-sizing: border-box;
-	-moz-box-sizing: border-box;
 	box-sizing: border-box;
 	border-top: 1px solid #eee;
 }
@@ -595,7 +528,6 @@
 	color: #a00;
 	text-decoration: none;
 	border-color: transparent;
-	-webkit-box-shadow: none;
 	box-shadow: none;
 	background: transparent;
 }
@@ -632,24 +564,21 @@
 	float: left;
 	margin: 0 30px 0 0;
 	width: 55%;
-	max-width: 880px;
+	max-width: 1200px; /* Recommended theme screenshot width, set here to avoid stretching */
 	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: '';
+	content: "";
 	display: block;
 	padding-top: 75%; /* using a 4/3 aspect ratio */
 }
@@ -684,7 +613,7 @@
 }
 
 .theme-overlay .screenshot.thumb:after {
-	content: '';
+	content: "";
 	display: block;
 	padding-top: 100%; /* using a 1/1 aspect ratio */
 }
@@ -728,7 +657,6 @@
 	font-size: 11px;
 	display: inline-block;
 	padding: 2px 8px;
-	-webkit-border-radius: 2px;
 	border-radius: 2px;
 	margin: 0 0 -10px;
 	-webkit-user-select: none;
@@ -743,10 +671,12 @@
 	font-weight: 100;
 	margin: 10px 0 0;
 	line-height: 1.3;
+	word-wrap: break-word;
+	overflow-wrap: break-word;
 }
 
 .theme-overlay .theme-version {
-	color: #999;
+	color: #72777c;
 	font-size: 13px;
 	font-weight: 400;
 	float: none;
@@ -755,10 +685,11 @@
 }
 
 .theme-overlay .theme-author {
-	color: #686868;
+	margin: 15px 0 25px;
+	color: #72777c;
 	font-size: 16px;
 	font-weight: 400;
-	margin: 15px 0 25px;
+	line-height: inherit;
 }
 
 .theme-overlay .theme-author a {
@@ -784,34 +715,16 @@
 
 .theme-overlay .theme-tags span {
 	color: #444;
-	font-weight: bold;
+	font-weight: 600;
 	margin-right: 5px;
 }
 
-/* Theme Updates info */
-.theme-overlay .theme-update-message {
-	background: #fef7f1;
-	border: 1px solid #eee;
-	border-left: 4px solid #d54e21;
-	-webkit-border-radius: 3px;
-	border-radius: 3px;
-	padding: 5px 20px 10px;
-}
-
-.theme-overlay .theme-update {
-	color: #23282d;
-	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 #00a0d2;
 	font-size: 14px;
-	font-weight: normal;
+	font-weight: 400;
 	margin-top: 30px;
 	padding: 10px 10px 10px 20px;
 }
@@ -838,6 +751,7 @@
 	right: auto;
 	top: auto;
 	bottom: auto;
+	z-index: 10;
 }
 
 .single-theme .theme-overlay .theme-about {
@@ -989,7 +903,6 @@
 }
 
 @media only screen and (max-width: 650px) {
-	.theme-overlay .theme-update,
 	.theme-overlay .theme-description {
 		margin-left: 0;
 	}
@@ -1022,23 +935,18 @@
 		font-size: 13px;
 	}
 
-	.themes-php .wrap h2 {
-		width: 100%;
-	}
-
 	.themes-php .wp-filter-search {
 		float: none;
 		clear: both;
 		left: 0;
-		top: 0;
 		right: 0;
-		margin: 10px 0;
+		margin: -5px 0 20px 0;
 		width: 100%;
 		max-width: 280px;
 	}
 
 	.theme-browser .theme.add-new-theme span:after {
-		font: normal 60px/90px 'dashicons';
+		font: normal 60px/90px dashicons;
 		width: 80px;
 		height: 80px;
 		top: 30%;
@@ -1083,41 +991,61 @@
 .theme-browser .theme .theme-installed {
 	background: #0073aa;
 }
-.theme-browser .theme .theme-installed:before {
-	content: '\f147';
+.theme-browser .theme .notice-success p:before {
+	color: #79ba49;
+	content: "\f147";
+	display: inline-block;
+	font: normal 20px/1 'dashicons';
+	-webkit-font-smoothing: antialiased;
+	-moz-osx-font-smoothing: grayscale;
+	vertical-align: top;
 }
-.theme-browser .theme.is-installed .theme-actions .button-primary {
-	display: none !important;
+
+.theme-install.updated-message:before {
+	content: '';
+}
+
+.theme-install-php .wp-filter {
+	padding-left: 20px;
 }
 
 .theme-install-php a.upload,
 .theme-install-php a.browse-themes {
 	cursor: pointer;
 }
-.theme-install-php a.browse-themes,
-.theme-install-php.show-upload-theme a.upload {
+
+.upload-view-toggle .browse,
+.plugin-install-tab-upload .upload-view-toggle .upload {
 	display: none;
 }
-.theme-install-php.show-upload-theme a.browse-themes {
+
+.plugin-install-tab-upload .upload-view-toggle .browse {
 	display: inline;
 }
+
 .upload-theme,
 .upload-plugin {
-	-webkit-box-sizing: border-box;
-	-moz-box-sizing: border-box;
 	box-sizing: border-box;
 	display: none;
 	margin: 0;
-	padding: 0;
+	padding: 50px 0;
 	width: 100%;
 	overflow: hidden;
 	position: relative;
 	top: 10px;
 }
-body.show-upload-theme .upload-theme,
-.upload-plugin {
+
+.upload-plugin-wrap {
+	display: none;
+}
+
+.show-upload-view .upload-theme,
+.show-upload-view .upload-plugin,
+.show-upload-view .upload-plugin-wrap,
+.plugin-install-tab-upload .upload-plugin {
 	display: block;
 }
+
 .upload-theme .wp-upload-form,
 .upload-plugin .wp-upload-form {
 	background: #fafafa;
@@ -1128,34 +1056,29 @@
 }
 .upload-theme .install-help,
 .upload-plugin .install-help {
-	color: #999;
+	color: #555d66; /* #f1f1f1 background */
 	font-size: 18px;
 	font-style: normal;
 	margin: 0;
-	padding: 40px 0 0;
+	padding: 0;
 	text-align: center;
 }
-body.show-upload-theme .upload-theme + .wp-filter,
-body.show-upload-theme .upload-theme + .wp-filter + .theme-browser {
-	display: none;
-}
 
-p.no-themes {
+p.no-themes,
+p.no-themes-local {
 	clear: both;
 	color: #666;
 	font-size: 18px;
 	font-style: normal;
 	margin: 0;
-	padding: 0;
+	padding: 100px 0;
 	text-align: center;
 	display: none;
 }
-body.no-results p.no-themes {
+
+.no-results p.no-themes {
 	display: block;
 }
-body.show-upload-theme p.no-themes {
-	display: none !important;
-}
 
 .theme-install-php .add-new-theme {
 	display: none !important;
@@ -1173,65 +1096,23 @@
 	}
 }
 
-.rating {
-	margin: 15px 0 0;
-}
-.rating span:before {
-	color: #e6b800;
-	content: "\f154";
-	display: inline-block;
-	-webkit-font-smoothing: antialiased;
-	font: normal 20px/1 'dashicons';
-	vertical-align: top;
+.theme-details .theme-rating {
+	line-height: 23px;
 }
-/* Half stars */
-.rating-10 span.one:before,
-.rating-30 span.two:before,
-.rating-50 span.three:before,
-.rating-70 span.four:before,
-.rating-90 span.five:before {
-	content: "\f459";
-}
-/* Full stars */
-.rating-20 span.one:before {
-	content: "\f155";
-}
-.rating-30 span.one:before,
-.rating-40 span.one:before,
-.rating-40 span.two:before {
-	content: "\f155";
+
+.theme-details .star-rating {
+	display: inline;
 }
-.rating-50 span.one:before,
-.rating-50 span.two:before,
-.rating-60 span.one:before,
-.rating-60 span.two:before,
-.rating-60 span.three:before {
-	content: "\f155";
+
+.theme-details .num-ratings,
+.theme-details .no-rating {
+	font-size: 11px;
+	color: #72777c;
 }
-.rating-70 span.one:before,
-.rating-70 span.two:before,
-.rating-70 span.three:before,
-.rating-80 span.one:before,
-.rating-80 span.two:before,
-.rating-80 span.three:before,
-.rating-80 span.four:before {
-	content: "\f155";
-}
-.rating-90 span.one:before,
-.rating-90 span.two:before,
-.rating-90 span.three:before,
-.rating-90 span.four:before,
-.rating-100 span.one:before,
-.rating-100 span.two:before,
-.rating-100 span.three:before,
-.rating-100 span.four:before,
-.rating-100 span.five:before {
-	content: "\f155";
-}
-.rating .ratings {
+
+.theme-details .no-rating {
 	display: block;
 	line-height: 20px;
-	color: #999;
 }
 
 /*------------------------------------------------------------------------------
@@ -1239,7 +1120,7 @@
 ------------------------------------------------------------------------------*/
 
 .appearance_page_custom-header #headimg {
-	border: 1px solid #DFDFDF;
+	border: 1px solid #ddd;
 	overflow: hidden;
 	width: 100%;
 }
@@ -1275,7 +1156,7 @@
 
 div#custom-background-image {
 	min-height: 100px;
-	border: 1px solid #dfdfdf;
+	border: 1px solid #ddd;
 }
 
 div#custom-background-image img {
@@ -1283,12 +1164,128 @@
 	max-height: 300px;
 }
 
+.background-position-control input[type="radio"]:checked ~ .button {
+	background: #eee;
+	border-color: #999;
+	box-shadow: inset 0 2px 5px -3px rgba( 0, 0, 0, .5 );
+	z-index: 1;
+}
+
+.background-position-control input[type="radio"]:focus ~ .button {
+	border-color: #5b9dd9;
+	box-shadow: inset 0 2px 5px -3px rgba( 0, 0, 0, .5 ), 0 0 3px rgba( 0, 115, 170, .8 );
+	color: #23282d;
+}
+
+.background-position-control .background-position-center-icon,
+.background-position-control .background-position-center-icon:before {
+	display: inline-block;
+	line-height: 1;
+	text-align: center;
+	transition: background-color .1s ease-in 0;
+}
+
+.background-position-control .background-position-center-icon {
+	height: 20px;
+	margin-top: 13px;
+	vertical-align: top;
+	width: 20px;
+}
+
+.background-position-control .background-position-center-icon:before {
+	background-color: #555;
+	border-radius: 50%;
+	content: "";
+	height: 12px;
+	width: 12px;
+}
+
+.background-position-control .button:hover .background-position-center-icon:before,
+.background-position-control input[type="radio"]:focus ~ .button .background-position-center-icon:before {
+	background-color: #23282d;
+}
+
+.background-position-control .button-group {
+	display: block;
+}
+
+.background-position-control .button-group .button {
+	border-radius: 0;
+	box-shadow: none;
+	/* Following properties are overridden by buttons responsive styles (see: wp-includes/css/buttons.css). */
+	height: 40px !important;
+	line-height: 37px !important;
+	margin: 0 -1px 0 0 !important;
+	padding: 0 10px 1px !important;
+	position: relative;
+}
+
+.background-position-control .button-group .button:active,
+.background-position-control .button-group .button:hover,
+.background-position-control .button-group .button:focus {
+	z-index: 1;
+}
+
+.background-position-control .button-group:last-child .button {
+	box-shadow: 0 1px 0 #ccc;
+}
+
+.background-position-control .button-group > label {
+	margin: 0 !important;
+}
+
+.background-position-control .button-group:first-child > label:first-child .button {
+	border-radius: 3px 0 0;
+}
+
+.background-position-control .button-group:first-child > label:first-child .dashicons {
+	-webkit-transform: rotate( 45deg );
+	transform: rotate( 45deg );
+}
+
+.background-position-control .button-group:first-child > label:last-child .button {
+	border-radius: 0 3px 0 0;
+}
+
+.background-position-control .button-group:first-child > label:last-child .dashicons {
+	-webkit-transform: rotate( -45deg );
+	transform: rotate( -45deg );
+}
+
+.background-position-control .button-group:last-child > label:first-child .button {
+	border-radius: 0 0 0 3px;
+}
+
+.background-position-control .button-group:last-child > label:first-child .dashicons {
+	-webkit-transform: rotate( -45deg );
+	transform: rotate( -45deg );
+}
+
+.background-position-control .button-group:last-child > label:last-child .button {
+	border-radius: 0 0 3px 0;
+}
+
+.background-position-control .button-group:last-child > label:last-child .dashicons {
+	-webkit-transform: rotate( 45deg );
+	transform: rotate( 45deg );
+}
+
+.background-position-control .button-group .dashicons {
+	margin-top: 9px;
+}
+
+.background-position-control .button-group + .button-group {
+	margin-top: -1px;
+}
+
 /*------------------------------------------------------------------------------
   23.0 - Full Overlay w/ Sidebar
 ------------------------------------------------------------------------------*/
 
 body.full-overlay-active {
 	overflow: hidden;
+	/* Hide all the content, the Customizer overlay is then made visible to be the only available content. */
+	visibility: hidden;
 }
 
 .wp-full-overlay {
@@ -1305,11 +1302,11 @@
 }
 
 .wp-full-overlay-sidebar {
-	-webkit-box-sizing: border-box;
-	-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;
@@ -1338,8 +1335,28 @@
 	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: '';
+	content: "";
 	display: block;
 	position: absolute;
 	top: 0;
@@ -1358,16 +1375,6 @@
 	height: 100%;
 }
 
-#customize-preview.wp-full-overlay-main {
-	background: url(../images/spinner.gif) no-repeat center center;
-	-webkit-background-size: 20px 20px;
-	background-size: 20px 20px;
-}
-
-#customize-preview.wp-full-overlay-main.iframe-ready {
-	background: none;
-}
-
 .wp-full-overlay-sidebar .wp-full-overlay-header {
 	position: absolute;
 	left: 0;
@@ -1378,7 +1385,6 @@
 	z-index: 10;
 	margin: 0;
 	border-top: none;
-	-webkit-box-shadow: none;
 	box-shadow: none;
 }
 
@@ -1390,7 +1396,6 @@
 	bottom: 0;
 	border-bottom: none;
 	border-top: none;
-	-webkit-box-shadow: none;
 	box-shadow: none;
 }
 
@@ -1422,7 +1427,6 @@
 	color: #444;
 	cursor: pointer;
 	text-decoration: none;
-	-webkit-transition: color .1s ease-in-out, background .1s ease-in-out;
 	transition: color .1s ease-in-out, background .1s ease-in-out;
 }
 
@@ -1436,7 +1440,6 @@
 	border-color: #ccc;
 	color: #000;
 	outline: none;
-	-webkit-box-shadow: none;
 	box-shadow: none;
 }
 
@@ -1476,100 +1479,235 @@
 	pointer-events: none;
 }
 
-/* Collapse Button */
-.wp-full-overlay a.collapse-sidebar {
-	position: absolute;
-	bottom: 12px;
+.theme-install-overlay .close-full-overlay,
+.theme-install-overlay .previous-theme,
+.theme-install-overlay .next-theme {
+	border-left: 0;
+	border-top: 0;
+	border-bottom: 0;
+}
+
+.theme-install-overlay .close-full-overlay:before,
+.theme-install-overlay .previous-theme:before,
+.theme-install-overlay .next-theme:before {
+	top: 2px;
 	left: 0;
-	z-index: 50;
-	display: block;
-	width: 19px;
-	height: 19px;
-	margin-left: 15px;
-	padding: 0;
-	-webkit-border-radius: 50%;
-	border-radius: 50%;
-	color: #777;
-	text-decoration: none;
 }
 
-.wp-full-overlay a.collapse-sidebar:hover {
+/* Collapse Button */
+.wp-core-ui .wp-full-overlay .collapse-sidebar {
+	position: fixed;
+	bottom: 0;
+	left: 0;
+	padding: 9px 0 9px 10px;
+	height: 45px;
+	color: #656a6f;
+	outline: 0;
+	line-height: 1;
+	background-color: transparent !important;
+	border: none !important;
+	box-shadow: none !important;
+	border-radius: 0 !important;
+}
+
+.wp-core-ui .wp-full-overlay .collapse-sidebar:hover,
+.wp-core-ui .wp-full-overlay .collapse-sidebar:focus {
 	color: #0073aa;
 }
 
-.wp-full-overlay.collapsed .collapse-sidebar {
-	position: absolute;
-	left: 100%;
+.wp-full-overlay .collapse-sidebar-arrow,
+.wp-full-overlay .collapse-sidebar-label {
+	display: inline-block;
+	vertical-align: middle;
+	line-height: 20px;
 }
 
 .wp-full-overlay .collapse-sidebar-arrow {
-	position: static;
-	margin-top: 0;
-	margin-left: 0;
-	display: block;
-	width: auto;
-	height: auto;
-	background: none;
+	width: 20px;
+	height: 20px;
+	margin: 0 2px; /* avoid the focus box-shadow to be cut-off */
+	border-radius: 50%;
+	overflow: hidden;
+}
+
+.wp-full-overlay .collapse-sidebar:hover .collapse-sidebar-arrow,
+.wp-full-overlay .collapse-sidebar:focus .collapse-sidebar-arrow {
+    box-shadow:
+    	0 0 0 1px #5b9dd9,
+		0 0 2px 1px rgba(30, 140, 190, .8);
+}
+
+.wp-full-overlay .collapse-sidebar-label {
+	margin-left: 3px;
+}
+
+.wp-full-overlay.collapsed .collapse-sidebar-label {
+	display: none;
 }
 
 .wp-full-overlay .collapse-sidebar-arrow:before {
-	-webkit-border-radius: 50%;
-	border-radius: 50%;
-	float: left;
+	display: block;
 	content: "\f148";
 	background: #eee;
-	font: normal 20px/1 'dashicons';
+	font: normal 20px/1 dashicons;
 	speak: none;
-	display: block;
 	padding: 0;
-	text-indent: 0;
-	text-align: center;
-	position: relative;
 	-webkit-font-smoothing: antialiased;
 	-moz-osx-font-smoothing: grayscale;
-	text-decoration: none !important;
+}
+
+.wp-core-ui .wp-full-overlay.collapsed .collapse-sidebar {
+	padding: 9px 10px;
 }
 
 /* rtl:ignore */
 .wp-full-overlay.collapsed .collapse-sidebar-arrow:before,
 .rtl .wp-full-overlay .collapse-sidebar-arrow:before {
-	-webkit-transform: rotate(180deg);
-	-ms-transform: rotate(180deg);
-	transform: rotate(180deg);
+	-webkit-transform: rotate(180.001deg);
+	transform: rotate(180.001deg); /* Firefox: promoting to its own layer to trigger anti-aliasing  */
 }
 
 .rtl .wp-full-overlay.collapsed .collapse-sidebar-arrow:before {
 	-webkit-transform: none;
-	-ms-transform: none;
 	transform: none;
 }
 
-.wp-full-overlay.collapsed .collapse-sidebar-arrow {
-	background-position: -1px -109px;
-}
-
-.wp-full-overlay .collapse-sidebar-label {
-	position: absolute;
-	left: 100%;
-	line-height: 20px;
-	margin-left: 10px;
-}
-
-.wp-full-overlay.collapsed .collapse-sidebar-label {
-	display: none;
-}
-
 /* Animations */
 .wp-full-overlay,
 .wp-full-overlay-sidebar,
 .wp-full-overlay .collapse-sidebar,
 .wp-full-overlay-main {
-	-webkit-transition-property: left, right, top, bottom, width, margin;
 	transition-property: left, right, top, bottom, width, margin;
-	-webkit-transition-duration: 0.2s;
 	transition-duration: 0.2s;
 }
 
+/* Device/preview size toggles */
+
+.wp-full-overlay {
+	background: #191e23;
+}
+
+.wp-full-overlay-main {
+	background-color: #f1f1f1;
+}
+
+.expanded .wp-full-overlay-footer {
+	position: fixed;
+	bottom: 0;
+	left: 0;
+	min-width: 299px;
+	max-width: 599px;
+	width: 18%;
+	width: calc( 18% - 1px );
+	height: 45px;
+	border-top: 1px solid #ddd;
+	background: #eee;
+}
+
+.wp-full-overlay-footer .devices-wrapper {
+	float: right;
+}
+
+.wp-full-overlay-footer .devices {
+	position: relative;
+	background: #eee;
+	box-shadow: -20px 0 10px -5px #eee;
+}
+
+.wp-full-overlay-footer .devices button {
+	cursor: pointer;
+	background: transparent;
+	border: none;
+	height: 45px;
+	padding: 0 3px;
+	margin: 0 0 0 -4px;
+	box-shadow: none;
+	border-top: 1px solid transparent;
+	border-bottom: 4px solid transparent;
+	transition: .15s color ease-in-out,
+	            .15s background-color ease-in-out,
+	            .15s border-color ease-in-out;
+}
+
+.wp-full-overlay-footer .devices button:focus {
+	box-shadow: none;
+	outline: none;
+}
+
+.wp-full-overlay-footer .devices button:before {
+	display: inline-block;
+	-webkit-font-smoothing: antialiased;
+	font: normal 20px/30px "dashicons";
+	vertical-align: top;
+	margin: 3px 0;
+	padding: 4px 8px;
+	color: #656a6f;
+}
+
+.wp-full-overlay-footer .devices button.active {
+	border-bottom-color: #191e23;
+}
+
+.wp-full-overlay-footer .devices button:hover,
+.wp-full-overlay-footer .devices button:focus {
+	background-color: #fff;
+}
+
+.wp-full-overlay-footer .devices button:focus,
+.wp-full-overlay-footer .devices button.active:hover {
+	border-bottom-color: #0073aa;
+}
+
+.wp-full-overlay-footer .devices button.active:before {
+	color: #191e23;
+}
+
+.wp-full-overlay-footer .devices button:hover:before,
+.wp-full-overlay-footer .devices button:focus:before {
+	color: #0073aa;
+}
+
+.wp-full-overlay-footer .devices .preview-desktop:before {
+	content: "\f472";
+}
+
+.wp-full-overlay-footer .devices .preview-tablet:before {
+	content: "\f471";
+}
+
+.wp-full-overlay-footer .devices .preview-mobile:before {
+	content: "\f470";
+}
+
+@media screen and (max-width:1024px) {
+	.wp-full-overlay-footer .devices {
+		display: none;
+	}
+}
+
+.collapsed .wp-full-overlay-footer .devices button:before {
+	display: none;
+}
+
+.preview-mobile .wp-full-overlay-main {
+	margin: auto 0 auto -160px;
+	width: 320px;
+	height: 480px;
+	max-height: 100%;
+	max-width: 100%;
+	left: 50%;
+}
+
+.preview-tablet .wp-full-overlay-main {
+	margin: auto 0 auto -360px;
+	width: 720px; /* Size is loosely based on a typical "tablet" device size. Intentionally ambiguous - this does not represent any particular device precisely. */
+	height: 1080px;
+	max-height: 100%;
+	max-width: 100%;
+	left: 50%;
+}
+
+
 /*------------------------------------------------------------------------------
   24.0 - Customize Loader
 ------------------------------------------------------------------------------*/
@@ -1583,9 +1721,9 @@
 	display: none;
 }
 
-#customize-container {
-	display: none;
-	background: #fff;
+#customize-container,
+#customize-controls .notice.notification-overlay {
+	background: #eee;
 	z-index: 500000;
 	position: fixed;
 	overflow: visible;
@@ -1595,34 +1733,28 @@
 	right: 0;
 	height: 100%;
 }
+#customize-container {
+	display: none;
+}
 
-.customize-active #customize-container {
-	display: block;
+/* Make the Customizer and Theme installer overlays the only available content. */
+#customize-container,
+.theme-install-overlay {
+	visibility: visible;
 }
 
 .customize-loading #customize-container iframe {
 	opacity: 0;
 }
 
-.customize-loading #customize-container {
-	background: #fff url(../images/spinner.gif) no-repeat fixed center center;
-	-webkit-background-size: 20px 20px;
-	background-size: 20px 20px;
-}
-
 #customize-container iframe,
 .theme-install-overlay iframe {
 	height: 100%;
 	width: 100%;
 	z-index: 20;
-	-webkit-transition: opacity 0.3s;
 	transition: opacity 0.3s;
 }
 
-#customize-container .collapse-sidebar {
-	bottom: 16px;
-}
-
 #customize-controls {
 	margin-top: 0;
 }
@@ -1661,7 +1793,7 @@
 }
 
 .install-theme-info .theme-screenshot {
-	margin-top: 15px;
+	margin: 15px 0;
 	width: 258px;
 	border: 1px solid #ccc;
 }
@@ -1672,22 +1804,16 @@
 
 .theme-details .theme-version {
 	margin: 15px 0;
-	float: left;
-}
-
-.theme-details .star-rating {
-	margin: 7px 0;
-	float: right;
 }
 
 .theme-details .theme-description {
 	float: left;
-	color: #777;
+	color: #72777c;
 	line-height: 20px;
 	max-width: 100%;
 }
 
-.theme-install-overlay .wp-full-overlay-header .theme-install {
+.theme-install-overlay .wp-full-overlay-header .button {
 	float: right;
 	margin: 8px 10px 0 0;
 	/* For when .theme-install is a span rather than a.button-primary (already installed theme) */
@@ -1706,11 +1832,39 @@
 }
 
 .theme-install-overlay .wp-full-overlay-main {
-	background: #fff url(../images/spinner.gif) no-repeat center center;
-	-webkit-background-size: 20px 20px;
+	position: absolute;
+	z-index: 0;
+	background-color: #f1f1f1;
+}
+
+.customize-loading #customize-container {
+	background-color: #f1f1f1;
+}
+
+#customize-preview.wp-full-overlay-main:before,
+.customize-loading #customize-container:before,
+#customize-controls .notice.notification-overlay.notification-loading:before,
+.theme-install-overlay .wp-full-overlay-main:before {
+	content: "";
+	display: block;
+	width: 20px;
+	height: 20px;
+	position: absolute;
+	left: 50%;
+	top: 50%;
+	z-index: -1;
+	margin: -10px 0 0 -10px;
+	-webkit-transform: translateZ(0);
+	transform: translateZ(0);
+	background: transparent url(../images/spinner.gif) no-repeat center center;
 	background-size: 20px 20px;
 }
 
+#customize-preview.wp-full-overlay-main.iframe-ready:before,
+.theme-install-overlay.iframe-ready .wp-full-overlay-main:before {
+	background-image: none;
+}
+
 /* =Media Queries
 -------------------------------------------------------------- */
 
@@ -1722,19 +1876,15 @@
   (min-resolution: 120dpi) {
 	.wp-full-overlay .collapse-sidebar-arrow {
 		background-image: url(../images/arrows-2x.png);
-		-webkit-background-size: 15px 123px;
 		background-size: 15px 123px;
 	}
 
-	#customize-preview.wp-full-overlay-main,
-	.customize-loading #customize-container,
-	.theme-install-overlay .wp-full-overlay-main {
+	#customize-preview.wp-full-overlay-main:before,
+	.customize-loading #customize-container:before,
+	#customize-controls .notice.notification-overlay.notification-loading:before,
+	.theme-install-overlay .wp-full-overlay-main:before {
 		background-image: url(../images/spinner-2x.gif);
 	}
-
-	.theme-install-overlay .wp-full-overlay-header .theme-install {
-		margin-top: 2px;
-	}
 }
 
 @media screen and ( max-width: 782px ) {
@@ -1757,4 +1907,23 @@
 		margin-top: 6px;
 		line-height: normal;
 	}
+
+	.theme-browser .theme .theme-actions .button {
+		margin-bottom: 0;
+	}
+
+	.theme-browser .theme.active .theme-actions,
+	.theme-browser .theme .theme-actions {
+		padding-top: 8px;
+		padding-bottom: 8px;
+	}
 }
+
+@media aural {
+	.theme .notice:before,
+	.theme-info .updating-message:before,
+	.theme-info .updated-message:before,
+	.theme-install.updating-message:before {
+		speak: none;
+	}
+}