[WebUI] Fix rest of CSS style nits so I can turn on CSS checker.

chrome/browser/resources/print_preview/print_preview.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.
  */
 
 html {
   height: 100%;
 }
 
 body {
@@ skipping 20 matching lines @@
   text-align: start;
 }
 
 #print-header {
   -webkit-padding-end: 14px;
   padding-bottom: 10px;
   padding-top: 10px;
 }
 
 #print-summary {
-  color: #53637d;
+  color: rgb(83, 99, 125);
   display: block;
   min-height: 30px;
 }
 
 /* Settings */
 
 #settings {
   -webkit-box-flex: 1;
   -webkit-box-shadow: inset 0 2px 2px rgba(0, 0, 0, .3);
   background: white;
   overflow-y: auto;
   padding-top: 2px;
 }
 
 .two-column {
   display: table-row;
 }
 
 .right-column {
   -webkit-padding-end: 16px;
   display: table-cell;
   width: auto;
 }
 
-.right-column .checkbox, .right-column .radio {
+.right-column .checkbox,
+.right-column .radio {
   margin: 0;
 }
 
 .right-column > *:not(:first-child):not(.hint),
 .right-column > .collapsible > *:not(:first-child):not(.hint) {
   margin-top: 8px;
 }
 
 .two-column h1 {
   -webkit-padding-start: 16px;
@@ skipping 23 matching lines @@
 
 h1 {
   color: #808080;
   font-weight: 300;
 }
 
 .preview-link-button {
   -webkit-padding-start: 16px;
   outline: 0;
   padding-top: 10px;
+  text-align: start;
   text-decoration: none;
-  text-align: start;
 }
 
 .preview-link-button:hover:not(:disabled) {
   text-decoration: underline;
 }
 
 .preview-link-button:disabled {
   color: rgba(0, 0, 0, .5);
   cursor: default;
   text-shadow: none;
@@ skipping 20 matching lines @@
   height: 0;
   line-height: 10px;
   margin: 0;
   overflow: hidden;
 }
 
 span.hint.visible {
   -webkit-animation-duration: 200ms;
   -webkit-animation-fill-mode: forwards;
   -webkit-user-select: text;
-  color: #8c1414;
+  color: rgb(140, 20, 20);
   height: auto;
   margin-bottom: -5px;
   margin-top: 5px;
   padding-bottom: 5px;
 }
 
 span.hint.closing {
   -webkit-transition: margin 150ms, height 150ms, opacity 150ms;
   background: transparent;
   height: 0 !important;
@@ skipping 80 matching lines @@
  -webkit-padding-start: 16px;
   display: inline-block;
 }
 
 #copies {
   position: relative;
   width: 2.75em;
 }
 
 #copies.invalid {
-  background: #fff0f0;
-  color: #8c1414;
+  background: rgb(255, 240, 240);
+  color: rgb(140, 20, 20);
 }
 
 #increment,
 #decrement {
   -webkit-padding-end: 0;
   -webkit-padding-start: 0;
   font-weight: 600;
   margin: 0;
   min-width: 0;
   position: relative;
@@ skipping 69 matching lines @@
 [hidden] {
   display: none !important;
 }
 
 #overlay-layer {
   -webkit-transition: opacity 200ms linear;
   /* overlayFadeInTransitionDelay = pluginFadeOutTransitionDelay +
    *     pluginFadeOutTransitionDuration = 350ms */
   -webkit-transition-delay: 350ms;
   -webkit-user-select: none;
-  background: #cccccc;
+  background: #ccc;
   height: 100%;
   margin: 0;
   opacity: 1;
   position: absolute;
   width: 100%;
 }
 
 #overlay-layer.invisible {
   /* overlayFadeOutTransitionDuration = 100ms */
   -webkit-transition: opacity 100ms linear;
@@ skipping 85 matching lines @@
   position: absolute;
   text-align: center;
   top: 50%;
   width: 100%;
 }
 
 #intentionally-blank {
   color: black;
   display: inline-block;
   font-style: italic;
+  padding: 0 10px;
   text-align: center;
   text-decoration: none;
-  padding: 0 10px;
 }