Plugin Power Saver: Make posters work right when image is 404 Not Found.

chrome/renderer/resources/plugin_placeholders.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. */
 
-body {
+html, body {
+  -webkit-user-select: none;
   font-family: sans-serif;
+  height: 100%;
   margin: 0;
   overflow: hidden;
   text-align: center;
-  -webkit-user-select: none;
+  width: 100%;
 }
 
 h1 {
   font-size: 10pt;
   font-weight: normal;
   padding: 0pt 10pt;
 <if expr="not is_android and not chromeos">
   visibility: hidden;
 </if>
 }
 
 #outer:hover h1, #outer:hover #close {
   visibility: visible;
 }
 
 p {
   font-size: 8pt;
   padding: 0pt 14pt;
 }
 
 #outer {
   border: 1px black solid;
   box-sizing: border-box;
   height: 100%;
   position: absolute;
   width: 100%;
 }
 
 #inner {
-  position: relative;
   height: 100%;
-  width: 100%;
-  top: 50%;
 <if expr="not is_android">
   margin-top: -70px;
 </if>
 <if expr="is_android">
   margin-top: -14px;
 </if>
+  position: relative;
+  top: 50%;
+  width: 100%;
 }
 
 #close {
-<if expr="not is_android">
-  visibility: hidden;
-</if>
-  cursor: pointer;
-  position: absolute;
-  right: 3px;
-  top: 3px;
-  height: 14px;
-  width: 14px;
   background-image: -webkit-image-set(
       url(../../../ui/resources/default_100_percent/close_2.png) 1x,
       url(../../../ui/resources/default_200_percent/close_2.png) 2x);
   background-position: right top;
   background-repeat: no-repeat;
+  cursor: pointer;
+  height: 14px;
+  position: absolute;
+  right: 3px;
+  top: 3px;
+<if expr="not is_android">
+  visibility: hidden;
+</if>
+  width: 14px;
 }
 
 #close:hover {
   background-image: -webkit-image-set(
       url(../../../ui/resources/default_100_percent/close_2_hover.png) 1x,
       url(../../../ui/resources/default_200_percent/close_2_hover.png) 2x);
 }
 
 #close:active {
   background-image: -webkit-image-set(
       url(../../../ui/resources/default_100_percent/close_2_pressed.png) 1x,
       url(../../../ui/resources/default_200_percent/close_2_pressed.png) 2x);
 }