Print Preview: Fixing print header alignment, "Preview loading..." spacing and animation

chrome/browser/resources/print_preview.css

Index: chrome/browser/resources/print_preview.css
diff --git a/chrome/browser/resources/print_preview.css b/chrome/browser/resources/print_preview.css
index c0eaaa919427b719ab99f587f43ad438c168a2fe..73f44525d02c363ab8a3cd002de586af15623120 100644
--- a/chrome/browser/resources/print_preview.css
+++ b/chrome/browser/resources/print_preview.css
@@ -116,14 +116,13 @@ body header > h1 {
 }
 
 #print-header {
-  -webkit-padding-end: 16px;
+  -webkit-padding-start: 16px;
   font-size: 13px;
   line-height: 22px;
   margin-bottom: 10px;
   margin-top: 10px;
   max-width: 616px;
   position: relative;
-  text-align: center;
 }
 
 p {
@@ -636,6 +635,7 @@ select {
 
 #mainview {
   -webkit-box-flex: 1;
+  -webkit-user-select: none;
   background-color: #ccc;
   position: relative;
 }
@@ -687,7 +687,7 @@ html[dir='rtl'] .messages {
 
 @-webkit-keyframes dancing-dots-jump {
   0% { top: 0; }
-  35% { top: 0; }
+  55% { top: 0; }
   60% { top: -10px; }
   80% { top: 3px; }
   90% { top: -2px; }
@@ -695,6 +695,10 @@ html[dir='rtl'] .messages {
   100% { top: 0; }
 }
 
+#loading {
+  -webkit-margin-end: -3px;
+}
+
 #dancing-dots-text span span {
   -webkit-animation-duration: 1800ms;
   -webkit-animation-iteration-count: infinite;