OOBE polishing.

chrome/browser/resources/chromeos/login/oobe.css

 /* Copyright (c) 2012 The Chromium Authors. All rights reserved.
  * Use of this source code is governed by a BSD-style license that can be
  * found in the LICENSE file.
  *
  * This is the stylesheet used by the Out of the box experience (OOBE) flow,
  * sign in and lock screens.
  */
 
 html,
 body {
@@ skipping 43 matching lines @@
   -webkit-transition: border-color 200ms;
   border: 1px solid transparent;
   /* Don't grey out disabled buttons. */
   color: buttontext !important;
 }
 
 button.custom-appearance:focus {
   border-color: rgb(77, 144, 254);
 }
 
+button:not(.custom-appearance) {
+  min-width: 72px !important;
+}
+
+#back-button {
+  -webkit-margin-end: 8px;
+}
+
 #outer-container {
   -webkit-box-align: center;
   -webkit-box-pack: center;
   bottom: 41px;  /* Leave space for the header bar */
   display: -webkit-box;
   left: 0;
   position: absolute;
   right: 0;
   top: 0;
 }
@@ skipping 263 matching lines @@
 
 html[oobe=new] #progress-dots {
   -webkit-box-pack: center;
   -webkit-margin-before: 15px;
   display: -webkit-box;
 }
 
 .progdot {
   -webkit-margin-end: 12px;
   background: black;
-  opacity: 0.1;
+  opacity: 0.4;
 }
 
 html[oobe=old] .progdot {
   border-radius: 2px;
   height: 8px;
   width: 8px;
 }
 
 html[oobe=new] .progdot {
+  background: white;
   height: 10px;
   width: 10px;
 }
 
 .progdot-active {
   opacity: 0.5;
 }
 
 .control-with-label {
   -webkit-box-align: start;
@@ skipping 345 matching lines @@
 
 #oobe.connect #connect-dot,
 #oobe.eula #eula-dot,
 #oobe.signin #signin-dot,
 #oobe.gaia-signin #gaia-signin-dot,
 #oobe.enrollment #signin-dot,
 #oobe.enrollment #gaia-signin-dot,
 #oobe.oauth-enrollment #signin-dot,
 #oobe.oauth-enrollment #gaia-signin-dot,
 #oobe.user-image #user-image-dot {
-  opacity: 0.4;
+  opacity: 1;
 }
 
 #account-picker-dot,
 #enrollment-dot,
 #oauth-enrollment-dot,
 #update-dot {
   display: none;
 }
 
 #connect table {
@@ skipping 135 matching lines @@
 #update #update-estimated-time-left {
   -webkit-margin-before: 4px;
 }
 
 #update #update-estimated-time-left {
   color: #666;
   font-size: 13px;
   text-align: center;
 }
 
-button:not(.custom-appearance) {
-  min-width: 80px;
-}
-
 .eula-columns {
   display: -webkit-box;
   width: 630px;
 }
 
 .eula-frame {
   border: none;
   height: 200px;
   padding: 0 0 0 5px;
   width: 313px;
@@ skipping 375 matching lines @@
   width: 100%;
 }
 
 .background-initial {
   opacity: 0;
 }
 
 .background-final {
   opacity: 1;
 }