Index: wp-includes/css/customize-controls.dev.css
===================================================================
--- wp-includes/css/customize-controls.dev.css	(revision 20729)
+++ wp-includes/css/customize-controls.dev.css	(working copy)
@@ -18,7 +18,7 @@
 
 .customize-section-title {
 	margin: 0;
-	padding: 15px 20px;
+	padding: 15px 6.66667%;
 	position: relative;
 
 	cursor: pointer;
@@ -30,7 +30,7 @@
 
 .customize-section-content {
 	display: none;
-	padding: 10px 20px 15px;
+	padding: 10px 6.66667% 15px;
 	overflow: hidden;
 }
 
@@ -143,19 +143,20 @@
 	float: left;
 	clear: both;
 	margin-bottom: 4px;
+	width: 100%;
 }
 
 .customize-control-title {
 	clear: left;
 	float: left;
-	min-width: 110px;
-	margin-right: 10px;
+	width: 49%;
+	margin-right: 3.33333%;
 	line-height: 28px;
 }
 
 .customize-control-content {
 	float: right;
-	width: 140px;
+	width: 46.66667%;
 }
 
 .customize-control-text input,
@@ -170,13 +171,13 @@
 
 .customize-control-text input {
 	float: right;
-	width: 138px;
+	width: 46%;
 	line-height: 18px;
 	margin: 1px;
 }
 
 .customize-control-select select {
-	width: 138px;
+	width: 46%;
 	height: 28px;
 	line-height: 28px;
 }
@@ -381,7 +382,7 @@
 
 .customize-section .customize-control-image .dropdown-content {
 	height: auto;
-	min-height: 24px;
+	min-height: 22px;
 	min-width: 40px;
 	padding: 0;
 }
@@ -392,8 +393,8 @@
 
 .customize-section .customize-control-image .preview-thumbnail img {
 	display: block;
-	max-width: 122px;
-	max-height: 98px;
+	max-width: 112px;
+	max-height: 90px;
 	margin: 0 auto;
 }