Initial updates for Reader View.

11 files changed, 801 insertions, 811 deletions

diff --git a/toolkit/themes/shared/aboutReader.css b/toolkit/themes/shared/aboutReader.css
index 49436de84..4dbf11f6d 100644
--- a/toolkit/themes/shared/aboutReader.css
+++ b/toolkit/themes/shared/aboutReader.css
@@ -2,23 +2,13 @@
  * License, v. 2.0. If a copy of the MPL was not distributed with this file,
  * You can obtain one at http://mozilla.org/MPL/2.0/. */
 
+/* Avoid adding ID selector rules in this style sheet, since they could
+ * inadvertently match elements in the article content. */
+
 body {
   padding: 64px 51px;
 }
 
-@media print {
-  #container {
-    max-width: 100% !important;
-    font-size: 14px !important;
-    font-family: Georgia, "Times New Roman", serif !important;
-  }
-
-  body {
-    padding-top: 0px;
-    padding-bottom: 0px;
-  }
-}
-
 body.loaded {
   transition: color 0.4s, background-color 0.4s;
 }
@@ -56,80 +46,80 @@ body.serif .remove-button  {
   font-family: Georgia, "Times New Roman", serif;
 }
 
-#container {
+.container {
   max-width: 30em;
   margin: 0 auto;
 }
 
-#container.font-size1 {
+.container.font-size1 {
   font-size: 12px;
 }
 
-#container.font-size2 {
+.container.font-size2 {
   font-size: 14px;
 }
 
-#container.font-size3 {
+.container.font-size3 {
   font-size: 16px;
 }
 
-#container.font-size4  {
+.container.font-size4  {
   font-size: 18px;
 }
 
-#container.font-size5 {
+.container.font-size5 {
   font-size: 20px;
 }
 
-#container.font-size6 {
+.container.font-size6 {
   font-size: 22px;
 }
 
-#container.font-size7 {
+.container.font-size7 {
   font-size: 24px;
 }
 
-#container.font-size8 {
+.container.font-size8 {
   font-size: 26px;
 }
 
-#container.font-size9 {
+.container.font-size9 {
   font-size: 28px;
 }
 
-#container.content-width1 {
+.container.content-width1 {
   max-width: 20em;
 }
 
-#container.content-width2 {
+.container.content-width2 {
   max-width: 25em;
 }
 
-#container.content-width3 {
+.container.content-width3 {
   max-width: 30em;
 }
 
-#container.content-width4  {
+.container.content-width4  {
   max-width: 35em;
 }
 
-#container.content-width5 {
+.container.content-width5 {
   max-width: 40em;
 }
 
-#container.content-width6 {
+.container.content-width6 {
   max-width: 45em;
 }
 
-#container.content-width7 {
+.container.content-width7 {
   max-width: 50em;
 }
 
-#container.content-width8 {
+.container.content-width8 {
   max-width: 55em;
 }
 
-#container.content-width9 {
+.container.content-width9 {
   max-width: 60em;
 }
 
@@ -176,3 +166,575 @@ body:not(.loaded) .toolbar:-moz-locale-dir(ltr) {
 body:not(.loaded) .toolbar:-moz-locale-dir(rtl) {
   transform: translateX(100%);
 }
+
+.light-button {
+  color: #333333;
+  background-color: #ffffff;
+}
+
+.dark-button {
+  color: #eeeeee;
+  background-color: #333333;
+}
+
+.sepia-button {
+  color: #5b4636;
+  background-color: #f4ecd8;
+}
+
+.sans-serif-button {
+  font-family: Helvetica, Arial, sans-serif;
+}
+
+.serif-button {
+  font-family: Georgia, "Times New Roman", serif;
+}
+
+/* Loading/error message */
+
+.reader-message {
+  margin-top: 40px;
+  display: none;
+  text-align: center;
+  width: 100%;
+  font-size: 0.9em;
+}
+
+/* Header */
+
+.header {
+  text-align: start;
+  display: none;
+}
+
+.domain {
+  font-size: 0.9em;
+  line-height: 1.48em;
+  padding-bottom: 4px;
+  font-family: Helvetica, Arial, sans-serif;
+  text-decoration: none;
+  border-bottom: 1px solid;
+  color: #0095dd;
+}
+
+.header > h1 {
+  font-size: 1.6em;
+  line-height: 1.25em;
+  width: 100%;
+  margin: 30px 0;
+  padding: 0;
+}
+
+.header > .credits {
+  font-size: 0.9em;
+  line-height: 1.48em;
+  margin: 0 0 10px 0;
+  padding: 0;
+  font-style: italic;
+}
+
+.header > .meta-data {
+  font-size: 0.65em;
+  margin: 0 0 15px 0;
+}
+
+/*======= Controls toolbar =======*/
+
+.toolbar {
+  font-family: Helvetica, Arial, sans-serif;
+  position: fixed;
+  height: 100%;
+  top: 0;
+  left: 0;
+  margin: 0;
+  padding: 0;
+  list-style: none;
+  background-color: #fbfbfb;
+  -moz-user-select: none;
+  border-right: 1px solid #b5b5b5;
+  z-index: 1;
+}
+
+.button {
+  display: block;
+  background-size: 24px 24px;
+  background-repeat: no-repeat;
+  color: #333;
+  background-color: #fbfbfb;
+  height: 40px;
+  padding: 0;
+}
+
+.toolbar .button {
+  width: 40px;
+  background-position: center;
+  margin-right: -1px;
+  border-top: 0;
+  border-left: 0;
+  border-right: 1px solid #b5b5b5;
+  border-bottom: 1px solid #c1c1c1;
+}
+
+.button[hidden] {
+  display: none;
+}
+
+.dropdown {
+  text-align: center;
+  list-style: none;
+  margin: 0;
+  padding: 0;
+}
+
+.dropdown li {
+  margin: 0;
+  padding: 0;
+}
+
+/*======= Popup =======*/
+
+.dropdown-popup {
+  min-width: 300px;
+  text-align: start;
+  position: absolute;
+  left: 48px; /* offset to account for toolbar width */
+  z-index: 1000;
+  background-color: #fbfbfb;
+  visibility: hidden;
+  border-radius: 4px;
+  border: 1px solid #b5b5b5;
+  border-bottom-width: 0;
+  box-shadow: 0 1px 3px #c1c1c1;
+}
+
+.keep-open .dropdown-popup {
+  z-index: initial;
+}
+
+.dropdown-popup > hr {
+  display: none;
+}
+
+.open > .dropdown-popup {
+  visibility: visible;
+}
+
+.dropdown-arrow {
+  position: absolute;
+  top: 30px; /* offset arrow from top of popup */
+  left: -16px;
+  width: 16px;
+  height: 24px;
+  background-image: url("chrome://global/skin/reader/RM-Type-Controls-Arrow.svg");
+  display: block;
+}
+
+/*======= Font style popup =======*/
+
+.font-type-buttons,
+.font-size-buttons,
+.color-scheme-buttons,
+.content-width-buttons,
+.line-height-buttons {
+  display: flex;
+  flex-direction: row;
+}
+
+.font-type-buttons > button:first-child {
+  border-top-left-radius: 3px;
+}
+.font-type-buttons > button:last-child {
+  border-top-right-radius: 3px;
+}
+.color-scheme-buttons > button:first-child {
+  border-bottom-left-radius: 3px;
+}
+.color-scheme-buttons > button:last-child {
+  border-bottom-right-radius: 3px;
+}
+
+.font-type-buttons > button,
+.font-size-buttons > button,
+.color-scheme-buttons > button,
+.content-width-buttons > button,
+.line-height-buttons > button {
+  text-align: center;
+  border: 0;
+}
+
+.font-type-buttons > button,
+.font-size-buttons > button,
+.content-width-buttons > button,
+.line-height-buttons > button {
+  width: 50%;
+  background-color: transparent;
+  border-left: 1px solid #B5B5B5;
+  border-bottom: 1px solid #B5B5B5;
+}
+
+.color-scheme-buttons > button {
+  width: 33.33%;
+  font-size: 14px;
+}
+
+.color-scheme-buttons > .dark-button {
+  margin-top: -1px;
+  height: 61px;
+}
+
+.font-type-buttons > button:first-child,
+.font-size-buttons > button:first-child,
+.content-width-buttons > button:first-child,
+.line-height-buttons > button:first-child {
+  border-left: 0;
+}
+
+.font-type-buttons > button {
+  display: inline-block;
+  font-size: 62px;
+  height: 100px;
+}
+
+.font-size-buttons > button,
+.color-scheme-buttons > button,
+.content-width-buttons > button,
+.line-height-buttons > button {
+  height: 60px;
+}
+
+.font-type-buttons > button:active:hover,
+.font-type-buttons > button.selected,
+.color-scheme-buttons > button:active:hover,
+.color-scheme-buttons > button.selected {
+  box-shadow: inset 0 -3px 0 0 #fc6420;
+}
+
+.font-type-buttons > button:active:hover,
+.font-type-buttons > button.selected {
+  border-bottom: 1px solid #FC6420;
+}
+
+/* Make the serif button content the same size as the sans-serif button content. */
+.font-type-buttons > button > .description {
+  color: #666;
+  font-size: 12px;
+  margin-top: -5px;
+}
+
+/* Font sizes are different per-platform, so we need custom CSS to line them up. */
+%ifdef XP_MACOSX
+.font-type-buttons > .sans-serif-button > .name {
+  margin-top: 10px;
+}
+
+.font-type-buttons > .sans-serif-button > .description {
+  margin-top: -4px;
+}
+
+.font-type-buttons > .serif-button > .name {
+  font-size: 63px;
+}
+%elifdef XP_WIN
+.font-type-buttons > .sans-serif-button > .name {
+  margin-top: 2px;
+}
+
+.font-type-buttons > .sans-serif-button > .description {
+  margin-top: -4px;
+}
+
+.font-type-buttons > .serif-button > .name {
+  font-size: 63px;
+}
+%else
+.font-type-buttons > .sans-serif-button > .name {
+  margin-top: 5px;
+}
+
+.font-type-buttons > .sans-serif-button > .description {
+  margin-top: -8px;
+}
+
+.font-type-buttons > .serif-button > .name {
+  font-size: 70px;
+}
+%endif
+
+.button:hover,
+.font-size-buttons > button:hover,
+.font-type-buttons > button:hover,
+.content-width-buttons > button:hover,
+.line-height-buttons > button:hover {
+  background-color: #ebebeb;
+}
+
+.dropdown.open,
+.button:active,
+.font-size-buttons > button:active,
+.font-size-buttons > button.selected,
+.content-width-buttons > button:active,
+.content-width-buttons > button.selected,
+.line-height-buttons > button:active,
+.line-height-buttons > button.selected {
+  background-color: #dadada;
+}
+
+/* Only used on Android */
+.font-size-sample {
+  display: none;
+}
+
+.minus-button,
+.plus-button,
+.content-width-minus-button,
+.content-width-plus-button,
+.line-height-minus-button,
+.line-height-plus-button {
+  background-color: transparent;
+  border: 0;
+  background-size: 18px 18px;
+  background-repeat: no-repeat;
+  background-position: center;
+}
+
+/*======= Toolbar icons =======*/
+
+.close-button {
+  background-image: url("chrome://global/skin/reader/RM-Close-24x24.svg#close");
+  height: 68px;
+  background-position: center 8px;
+}
+
+.close-button:hover {
+  background-image: url("chrome://global/skin/reader/RM-Close-24x24.svg#close-hover");
+  background-color: #d94141;
+  border-bottom: 1px solid #d94141;
+  border-right: 1px solid #d94141;
+}
+
+.close-button:hover:active {
+  background-image: url("chrome://global/skin/reader/RM-Close-24x24.svg#close-hover");
+  background-color: #AE2325;
+  border-bottom: 1px solid #AE2325;
+  border-right: 1px solid #AE2325;
+}
+
+.style-button {
+  background-image: url("chrome://global/skin/reader/RM-Type-Controls-24x24.svg");
+}
+
+.minus-button {
+  background-image: url("chrome://global/skin/reader/RM-Minus-24x24.svg");
+}
+
+.plus-button {
+  background-image: url("chrome://global/skin/reader/RM-Plus-24x24.svg");
+}
+
+.content-width-minus-button {
+  background-size: 42px 16px;
+  background-image: url("chrome://global/skin/reader/RM-Content-Width-Minus-42x16.svg");
+}
+
+.content-width-plus-button {
+  background-size: 44px 16px;
+  background-image: url("chrome://global/skin/reader/RM-Content-Width-Plus-44x16.svg");
+}
+
+.line-height-minus-button {
+  background-size: 34px 14px;
+  background-image: url("chrome://global/skin/reader/RM-Line-Height-Minus-38x14.svg");
+}
+
+.line-height-plus-button {
+  background-size: 34px 24px;
+  background-image: url("chrome://global/skin/reader/RM-Line-Height-Plus-38x24.svg");
+}
+
+@media print {
+  .toolbar {
+    display: none !important;
+  }
+}
+
+/*======= Article content =======*/
+
+/* Note that any class names from the original article that we want to match on
+ * must be added to CLASSES_TO_PRESERVE in ReaderMode.jsm, so that
+ * Readability.js doesn't strip them out */
+
+.moz-reader-content {
+  display: none;
+  font-size: 1em;
+  line-height: 1.6em;
+}
+
+.moz-reader-content.line-height1 {
+  line-height: 1em;
+}
+
+.moz-reader-content.line-height2 {
+  line-height: 1.2em;
+}
+
+.moz-reader-content.line-height3 {
+  line-height: 1.4em;
+}
+
+.moz-reader-content.line-height4 {
+  line-height: 1.6em;
+}
+
+.moz-reader-content.line-height5 {
+  line-height: 1.8em;
+}
+
+.moz-reader-content.line-height6 {
+  line-height: 2.0em;
+}
+
+.moz-reader-content.line-height7 {
+  line-height: 2.2em;
+}
+
+.moz-reader-content.line-height8 {
+  line-height: 2.4em;
+}
+
+.moz-reader-content.line-height9 {
+  line-height: 2.6em;
+}
+
+@media print {
+  .moz-reader-content p,
+  .moz-reader-content code,
+  .moz-reader-content pre,
+  .moz-reader-content blockquote,
+  .moz-reader-content ul,
+  .moz-reader-content ol,
+  .moz-reader-content li,
+  .moz-reader-content figure,
+  .moz-reader-content .wp-caption {
+    margin: 0 0 10px 0 !important;
+    padding: 0 !important;
+  }
+}
+
+.moz-reader-content h1,
+.moz-reader-content h2,
+.moz-reader-content h3 {
+  font-weight: bold;
+}
+
+.moz-reader-content h1 {
+  font-size: 1.6em;
+  line-height: 1.25em;
+}
+
+.moz-reader-content h2 {
+  font-size: 1.2em;
+  line-height: 1.51em;
+}
+
+.moz-reader-content h3 {
+  font-size: 1em;
+  line-height: 1.66em;
+}
+
+.moz-reader-content a:link {
+  text-decoration: underline;
+  font-weight: normal;
+}
+
+.moz-reader-content a:link,
+.moz-reader-content a:link:hover,
+.moz-reader-content a:link:active {
+  color: #0095dd;
+}
+
+.moz-reader-content a:visited {
+  color: #c2e;
+}
+
+.moz-reader-content * {
+  max-width: 100%;
+  height: auto;
+}
+
+.moz-reader-content p,
+.moz-reader-content p,
+.moz-reader-content code,
+.moz-reader-content pre,
+.moz-reader-content blockquote,
+.moz-reader-content ul,
+.moz-reader-content ol,
+.moz-reader-content li,
+.moz-reader-content figure,
+.moz-reader-content .wp-caption {
+  margin: -10px -10px 20px -10px;
+  padding: 10px;
+  border-radius: 5px;
+}
+
+.moz-reader-content li {
+  margin-bottom: 0;
+}
+
+.moz-reader-content li > ul,
+.moz-reader-content li > ol {
+  margin-bottom: -10px;
+}
+
+.moz-reader-content p > img:only-child,
+.moz-reader-content p > a:only-child > img:only-child,
+.moz-reader-content .wp-caption img,
+.moz-reader-content figure img {
+  display: block;
+}
+
+.moz-reader-content img[moz-reader-center] {
+  margin-left: auto;
+  margin-right: auto;
+}
+
+.moz-reader-content .caption,
+.moz-reader-content .wp-caption-text
+.moz-reader-content figcaption {
+  font-size: 0.9em;
+  line-height: 1.48em;
+  font-style: italic;
+}
+
+.moz-reader-content code,
+.moz-reader-content pre {
+  white-space: pre-wrap;
+}
+
+.moz-reader-content blockquote {
+  padding: 0;
+  padding-inline-start: 16px;
+}
+
+.moz-reader-content ul,
+.moz-reader-content ol {
+  padding: 0;
+}
+
+.moz-reader-content ul {
+  padding-inline-start: 30px;
+  list-style: disc;
+}
+
+.moz-reader-content ol {
+  padding-inline-start: 30px;
+  list-style: decimal;
+}
+
+/* Hide elements with common "hidden" class names */
+.moz-reader-content .visually-hidden,
+.moz-reader-content .visuallyhidden,
+.moz-reader-content .hidden,
+.moz-reader-content .invisible,
+.moz-reader-content .sr-only {
+  display: none;
+}
diff --git a/toolkit/themes/shared/aboutReaderContent.css b/toolkit/themes/shared/aboutReaderContent.css
deleted file mode 100644
index 633391d37..000000000
--- a/toolkit/themes/shared/aboutReaderContent.css
+++ /dev/null
@@ -1,177 +0,0 @@
-/* This Source Code Form is subject to the terms of the Mozilla Public
- * License, v. 2.0. If a copy of the MPL was not distributed with this file,
- * You can obtain one at http://mozilla.org/MPL/2.0/. */
-
-#moz-reader-content {
-  display: none;
-  font-size: 1em;
-  line-height: 1.6em;
-}
-
-#moz-reader-content.line-height1 {
-  line-height: 1em;
-}
-
-#moz-reader-content.line-height2 {
-  line-height: 1.2em;
-}
-
-#moz-reader-content.line-height3 {
-  line-height: 1.4em;
-}
-
-#moz-reader-content.line-height4 {
-  line-height: 1.6em;
-}
-
-#moz-reader-content.line-height5 {
-  line-height: 1.8em;
-}
-
-#moz-reader-content.line-height6 {
-  line-height: 2.0em;
-}
-
-#moz-reader-content.line-height7 {
-  line-height: 2.2em;
-}
-
-#moz-reader-content.line-height8 {
-  line-height: 2.4em;
-}
-
-#moz-reader-content.line-height9 {
-  line-height: 2.6em;
-}
-
-@media print {
-  p,
-  code,
-  pre,
-  blockquote,
-  ul,
-  ol,
-  li,
-  figure,
-  .wp-caption {
-    margin: 0 0 10px 0 !important;
-  }
-}
-
-h1,
-h2,
-h3 {
-  font-weight: bold;
-}
-
-h1 {
-  font-size: 1.6em;
-  line-height: 1.25em;
-}
-
-h2 {
-  font-size: 1.2em;
-  line-height: 1.51em;
-}
-
-h3 {
-  font-size: 1em;
-  line-height: 1.66em;
-}
-
-a:link {
-  text-decoration: underline;
-  font-weight: normal;
-}
-
-a:link,
-a:link:hover,
-a:link:active {
-  color: #0095dd;
-}
-
-a:visited {
-  color: #c2e;
-}
-
-* {
-  max-width: 100%;
-  height: auto;
-}
-
-p,
-code,
-pre,
-blockquote,
-ul,
-ol,
-li,
-figure,
-.wp-caption {
-  margin: -10px -10px 20px -10px;
-  padding: 10px;
-  border-radius: 5px;
-}
-
-li {
-  margin-bottom: 0;
-}
-
-li > ul,
-li > ol {
-  margin-bottom: -10px;
-}
-
-p > img:only-child,
-p > a:only-child > img:only-child,
-.wp-caption img,
-figure img {
-  display: block;
-}
-
-img[moz-reader-center] {
-  margin-left: auto;
-  margin-right: auto;
-}
-
-.caption,
-.wp-caption-text,
-figcaption {
-  font-size: 0.9em;
-  line-height: 1.48em;
-  font-style: italic;
-}
-
-code,
-pre {
-  white-space: pre-wrap;
-}
-
-blockquote {
-  padding: 0;
-  padding-inline-start: 16px;
-}
-
-ul,
-ol {
-  padding: 0;
-}
-
-ul {
-  padding-inline-start: 30px;
-  list-style: disc;
-}
-
-ol {
-  padding-inline-start: 30px;
-  list-style: decimal;
-}
-
-/* Hide elements with common "hidden" class names */
-.visually-hidden,
-.visuallyhidden,
-.hidden,
-.invisible,
-.sr-only {
-  display: none;
-}
diff --git a/toolkit/themes/shared/aboutReaderControls.css b/toolkit/themes/shared/aboutReaderControls.css
deleted file mode 100644
index afd65f458..000000000
--- a/toolkit/themes/shared/aboutReaderControls.css
+++ /dev/null
@@ -1,388 +0,0 @@
-/* This Source Code Form is subject to the terms of the Mozilla Public
- * License, v. 2.0. If a copy of the MPL was not distributed with this file,
- * You can obtain one at http://mozilla.org/MPL/2.0/. */
-
-.light-button {
-  color: #333333;
-  background-color: #ffffff;
-}
-
-.dark-button {
-  color: #eeeeee;
-  background-color: #333333;
-}
-
-.sepia-button {
-  color: #5b4636;
-  background-color: #f4ecd8;
-}
-
-.sans-serif-button {
-  font-family: Helvetica, Arial, sans-serif;
-}
-
-.serif-button {
-  font-family: Georgia, "Times New Roman", serif;
-}
-
-/* Loading/error message */
-
-#reader-message {
-  margin-top: 40px;
-  display: none;
-  text-align: center;
-  width: 100%;
-  font-size: 0.9em;
-}
-
-/* Header */
-
-.header {
-  text-align: start;
-  display: none;
-}
-
-.domain {
-  font-size: 0.9em;
-  line-height: 1.48em;
-  padding-bottom: 4px;
-  font-family: Helvetica, Arial, sans-serif;
-  text-decoration: none;
-  border-bottom: 1px solid;
-  color: #0095dd;
-}
-
-.header > h1 {
-  font-size: 1.6em;
-  line-height: 1.25em;
-  width: 100%;
-  margin: 30px 0;
-  padding: 0;
-}
-
-.header > .credits {
-  font-size: 0.9em;
-  line-height: 1.48em;
-  margin: 0 0 30px 0;
-  padding: 0;
-  font-style: italic;
-}
-
-/*======= Controls toolbar =======*/
-
-.toolbar {
-  font-family: Helvetica, Arial, sans-serif;
-  position: fixed;
-  height: 100%;
-  top: 0;
-  left: 0;
-  margin: 0;
-  padding: 0;
-  list-style: none;
-  background-color: #fbfbfb;
-  -moz-user-select: none;
-  border-right: 1px solid #b5b5b5;
-  z-index: 1;
-}
-
-.button {
-  display: block;
-  background-size: 24px 24px;
-  background-repeat: no-repeat;
-  color: #333;
-  background-color: #fbfbfb;
-  height: 40px;
-  padding: 0;
-}
-
-.toolbar .button {
-  width: 40px;
-  background-position: center;
-  margin-right: -1px;
-  border-top: 0;
-  border-left: 0;
-  border-right: 1px solid #b5b5b5;
-  border-bottom: 1px solid #c1c1c1;
-}
-
-.button[hidden] {
-  display: none;
-}
-
-.dropdown {
-  text-align: center;
-  list-style: none;
-  margin: 0;
-  padding: 0;
-}
-
-.dropdown li {
-  margin: 0;
-  padding: 0;
-}
-
-/*======= Popup =======*/
-
-.dropdown-popup {
-  min-width: 300px;
-  text-align: start;
-  position: absolute;
-  left: 48px; /* offset to account for toolbar width */
-  z-index: 1000;
-  background-color: #fbfbfb;
-  visibility: hidden;
-  border-radius: 4px;
-  border: 1px solid #b5b5b5;
-  border-bottom-width: 0;
-  box-shadow: 0 1px 12px #666;
-}
-
-.keep-open .dropdown-popup {
-  z-index: initial;
-}
-
-.dropdown-popup > hr {
-  display: none;
-}
-
-.open > .dropdown-popup {
-  visibility: visible;
-}
-
-.dropdown-arrow {
-  position: absolute;
-  top: 30px; /* offset arrow from top of popup */
-  left: -16px;
-  width: 24px;
-  height: 24px;
-  background-image: url("chrome://global/skin/reader/RM-Type-Controls-Arrow.svg");
-  display: block;
-}
-
-/*======= Font style popup =======*/
-
-#font-type-buttons,
-#font-size-buttons,
-#color-scheme-buttons,
-#content-width-buttons,
-#line-height-buttons {
-  display: flex;
-  flex-direction: row;
-}
-
-#font-type-buttons > button:first-child {
-  border-top-left-radius: 3px;
-}
-#font-type-buttons > button:last-child {
-  border-top-right-radius: 3px;
-}
-#color-scheme-buttons > button:first-child {
-  border-bottom-left-radius: 3px;
-}
-#color-scheme-buttons > button:last-child {
-  border-bottom-right-radius: 3px;
-}
-
-#font-type-buttons > button,
-#font-size-buttons > button,
-#color-scheme-buttons > button,
-#content-width-buttons > button,
-#line-height-buttons > button {
-  text-align: center;
-  border: 0;
-}
-
-#font-type-buttons > button,
-#font-size-buttons > button,
-#content-width-buttons > button,
-#line-height-buttons > button {
-  width: 50%;
-  background-color: transparent;
-  border-left: 1px solid #B5B5B5;
-  border-bottom: 1px solid #B5B5B5;
-}
-
-#color-scheme-buttons > button {
-  width: 33.33%;
-  font-size: 14px;
-}
-
-#color-scheme-buttons > .dark-button {
-  margin-top: -1px;
-  height: 61px;
-}
-
-#font-type-buttons > button:first-child,
-#font-size-buttons > button:first-child,
-#content-width-buttons > button:first-child,
-#line-height-buttons > button:first-child {
-  border-left: 0;
-}
-
-#font-type-buttons > button {
-  display: inline-block;
-  font-size: 62px;
-  height: 100px;
-}
-
-#font-size-buttons > button,
-#color-scheme-buttons > button,
-#content-width-buttons > button,
-#line-height-buttons > button {
-  height: 60px;
-}
-
-#font-type-buttons > button:active:hover,
-#font-type-buttons > button.selected,
-#color-scheme-buttons > button:active:hover,
-#color-scheme-buttons > button.selected {
-  box-shadow: inset 0 -3px 0 0 #fc6420;
-}
-
-#font-type-buttons > button:active:hover,
-#font-type-buttons > button.selected {
-  border-bottom: 1px solid #FC6420;
-}
-
-/* Make the serif button content the same size as the sans-serif button content. */
-#font-type-buttons > button > .description {
-  color: #666;
-  font-size: 12px;
-  margin-top: -5px;
-}
-
-/* Font sizes are different per-platform, so we need custom CSS to line them up. */
-%ifdef XP_MACOSX
-#font-type-buttons > .sans-serif-button > .name {
-  margin-top: 10px;
-}
-
-#font-type-buttons > .sans-serif-button > .description {
-  margin-top: -4px;
-}
-
-#font-type-buttons > .serif-button > .name {
-  font-size: 63px;
-}
-%elifdef XP_WIN
-#font-type-buttons > .sans-serif-button > .name {
-  margin-top: 2px;
-}
-
-#font-type-buttons > .sans-serif-button > .description {
-  margin-top: -4px;
-}
-
-#font-type-buttons > .serif-button > .name {
-  font-size: 63px;
-}
-%else
-#font-type-buttons > .sans-serif-button > .name {
-  margin-top: 5px;
-}
-
-#font-type-buttons > .sans-serif-button > .description {
-  margin-top: -8px;
-}
-
-#font-type-buttons > .serif-button > .name {
-  font-size: 70px;
-}
-%endif
-
-.button:hover,
-#font-size-buttons > button:hover,
-#font-type-buttons > button:hover,
-#content-width-buttons > button:hover,
-#line-height-buttons > button:hover {
-  background-color: #ebebeb;
-}
-
-.dropdown.open,
-.button:active,
-#font-size-buttons > button:active,
-#font-size-buttons > button.selected,
-#content-width-buttons > button:active,
-#content-width-buttons > button.selected,
-#line-height-buttons > button:active,
-#line-height-buttons > button.selected {
-  background-color: #dadada;
-}
-
-/* Only used on Android */
-#font-size-sample {
-  display: none;
-}
-
-.minus-button,
-.plus-button,
-.content-width-minus-button,
-.content-width-plus-button,
-.line-height-minus-button,
-.line-height-plus-button {
-  background-color: transparent;
-  border: 0;
-  background-size: 18px 18px;
-  background-repeat: no-repeat;
-  background-position: center;
-}
-
-/*======= Toolbar icons =======*/
-
-.close-button {
-  background-image: url("chrome://global/skin/reader/RM-Close-24x24.svg#close");
-  height: 68px;
-  background-position: center 8px;
-}
-
-.close-button:hover {
-  background-image: url("chrome://global/skin/reader/RM-Close-24x24.svg#close-hover");
-  background-color: #d94141;
-  border-bottom: 1px solid #d94141;
-  border-right: 1px solid #d94141;
-}
-
-.close-button:hover:active {
-  background-image: url("chrome://global/skin/reader/RM-Close-24x24.svg#close-hover");
-  background-color: #AE2325;
-  border-bottom: 1px solid #AE2325;
-  border-right: 1px solid #AE2325;
-}
-
-.style-button {
-  background-image: url("chrome://global/skin/reader/RM-Type-Controls-24x24.svg");
-}
-
-.minus-button {
-  background-image: url("chrome://global/skin/reader/RM-Minus-24x24.svg");
-}
-
-.plus-button {
-  background-image: url("chrome://global/skin/reader/RM-Plus-24x24.svg");
-}
-
-.content-width-minus-button {
-  background-size: 42px 16px;
-  background-image: url("chrome://global/skin/reader/RM-Content-Width-Minus-42x16.svg");
-}
-
-.content-width-plus-button {
-  background-size: 44px 16px;
-  background-image: url("chrome://global/skin/reader/RM-Content-Width-Plus-44x16.svg");
-}
-
-.line-height-minus-button {
-  background-size: 34px 14px;
-  background-image: url("chrome://global/skin/reader/RM-Line-Height-Minus-38x14.svg");
-}
-
-.line-height-plus-button {
-  background-size: 34px 24px;
-  background-image: url("chrome://global/skin/reader/RM-Line-Height-Plus-38x24.svg");
-}
-
-@media print {
-  .toolbar {
-    display: none !important;
-  }
-}
diff --git a/toolkit/themes/shared/jar.inc.mn b/toolkit/themes/shared/jar.inc.mn
index bdfca2a05..675353409 100644
--- a/toolkit/themes/shared/jar.inc.mn
+++ b/toolkit/themes/shared/jar.inc.mn
@@ -15,9 +15,7 @@ toolkit.jar:
   skin/classic/global/aboutCache.css                       (../../shared/aboutCache.css)
   skin/classic/global/aboutCacheEntry.css                  (../../shared/aboutCacheEntry.css)
   skin/classic/global/aboutMemory.css                      (../../shared/aboutMemory.css)
-  skin/classic/global/aboutReader.css                      (../../shared/aboutReader.css)
-  skin/classic/global/aboutReaderContent.css               (../../shared/aboutReaderContent.css)
-* skin/classic/global/aboutReaderControls.css              (../../shared/aboutReaderControls.css)
+* skin/classic/global/aboutReader.css                      (../../shared/aboutReader.css)
   skin/classic/global/aboutSupport.css                     (../../shared/aboutSupport.css)
   skin/classic/global/appPicker.css                        (../../shared/appPicker.css)
   skin/classic/global/config.css                           (../../shared/config.css)
@@ -34,7 +32,6 @@ toolkit.jar:
   skin/classic/global/icons/blocked.svg                    (../../shared/incontent-icons/blocked.svg)
   skin/classic/global/alerts/alert-common.css              (../../shared/alert-common.css)
   skin/classic/global/narrate.css                          (../../shared/narrate.css)
-  skin/classic/global/narrateControls.css                  (../../shared/narrateControls.css)
   skin/classic/global/narrate/arrow.svg                    (../../shared/narrate/arrow.svg)
   skin/classic/global/narrate/back.svg                     (../../shared/narrate/back.svg)
   skin/classic/global/narrate/fast.svg                     (../../shared/narrate/fast.svg)
diff --git a/toolkit/themes/shared/narrate.css b/toolkit/themes/shared/narrate.css
index 8a44e78e2..836b5d686 100644
--- a/toolkit/themes/shared/narrate.css
+++ b/toolkit/themes/shared/narrate.css
@@ -1,3 +1,6 @@
+/* Avoid adding ID selector rules in this style sheet, since they could
+ * inadvertently match elements in the article content. */
+
 .narrating {
   position: relative;
   z-index: 1;
@@ -22,7 +25,7 @@ body.dark .narrating {
   z-index: -1;
   border-bottom-style: solid;
   border-bottom-width: 7px;
-  transition: left 0.1s ease;
+  transition: left 0.1s ease, width 0.1s ease;
 }
 
 .narrating > .narrate-word-highlight {
@@ -44,3 +47,193 @@ body.sepia .narrate-word-highlight {
 body.dark .narrate-word-highlight {
   border-bottom-color: #6f6f6f;
 }
+
+.narrate-dropdown {
+  --border-color: #e5e5e5;
+}
+
+.narrate-toggle > svg {
+  display: block;
+  margin: 0 8px;
+}
+
+.narrate-dropdown > .dropdown-popup button {
+  background-color: transparent;
+}
+
+.narrate-dropdown > .dropdown-popup button:hover:not(:disabled) {
+  background-color: #eaeaea;
+}
+
+.narrate-row {
+  display: flex;
+  align-items: center;
+  min-height: 40px;
+  box-sizing: border-box;
+}
+
+.narrate-row:not(:first-child) {
+  border-top: 1px solid var(--border-color);
+}
+
+/* Control buttons */
+
+.narrate-control > button {
+  background-size: 24px 24px;
+  background-repeat: no-repeat;
+  background-position: center center;
+  height: 64px;
+  width: 100px;
+  border: none;
+  color: #666;
+  box-sizing: border-box;
+}
+
+.narrate-control > button:not(:first-child) {
+  border-left: 1px solid var(--border-color);
+}
+
+.narrate-skip-previous {
+  border-top-left-radius: 3px;
+  background-image: url("chrome://global/skin/narrate/back.svg#enabled");
+  -moz-context-properties: fill;
+  fill: rgb(128 128 128);
+}
+
+.narrate-skip-next {
+  border-top-right-radius: 3px;
+  background-image: url("chrome://global/skin/narrate/forward.svg#enabled");
+  -moz-context-properties: fill;
+  fill: rgb(128 128 128);
+}
+
+.narrate-skip-previous:disabled {
+  background-image: url("chrome://global/skin/narrate/back.svg#disabled");
+}
+
+.narrate-skip-next:disabled {
+  background-image: url("chrome://global/skin/narrate/forward.svg#disabled");
+}
+
+.narrate-start-stop {
+  background-image: url("chrome://global/skin/narrate/start.svg");
+}
+
+.narrate-dropdown.speaking .narrate-start-stop {
+  background-image: url("chrome://global/skin/narrate/stop.svg");
+}
+
+/* Rate control */
+
+.narrate-rate::before, .narrate-rate::after {
+  content: '';
+  width: 48px;
+  height: 40px;
+  background-position: center;
+  background-repeat: no-repeat;
+  background-size: 24px auto;
+}
+
+.narrate-rate::before {
+  background-image: url("chrome://global/skin/narrate/slow.svg");
+}
+
+.narrate-rate::after {
+  background-image: url("chrome://global/skin/narrate/fast.svg");
+}
+
+.narrate-rate-input {
+  margin: 0 1px;
+  flex-grow: 1;
+}
+
+.narrate-rate-input::-moz-range-track {
+  background-color: #979797;
+  height: 2px;
+}
+
+.narrate-rate-input::-moz-range-progress {
+  background-color: #2EA3FF;
+  height: 2px;
+}
+
+.narrate-rate-input::-moz-range-thumb {
+  background-color: #808080;
+  height: 16px;
+  width: 16px;
+  border-radius: 8px;
+  border-width: 0;
+}
+
+.narrate-rate-input:active::-moz-range-thumb {
+  background-color: #2EA3FF;
+}
+
+/* Voice selection */
+
+.voiceselect {
+  width: 100%;
+}
+
+.voiceselect > button.select-toggle,
+.voiceselect > .options > button.option {
+  -moz-appearance: none;
+  border: none;
+  width: 100%;
+  min-height: 40px;
+}
+
+.voiceselect.open > button.select-toggle {
+  border-bottom: 1px solid var(--border-color);
+}
+
+.voiceselect > button.select-toggle::after {
+  content: '';
+  background-image: url("chrome://global/skin/narrate/arrow.svg");
+  background-position: center;
+  background-repeat: no-repeat;
+  background-size: 12px 12px;
+  display: inline-block;
+  width: 1.5em;
+  height: 1em;
+  vertical-align: middle;
+}
+
+.voiceselect > .options > button.option:not(:first-child) {
+  border-top: 1px solid var(--border-color);
+}
+
+.voiceselect > .options > button.option  {
+  box-sizing: border-box;
+}
+
+.voiceselect > .options:not(.hovering) > button.option:focus {
+  background-color: #eaeaea;
+}
+
+.voiceselect > .options:not(.hovering) > button.option:hover:not(:focus) {
+  background-color: transparent;
+}
+
+.voiceselect > .options > button.option::-moz-focus-inner {
+  outline: none;
+  border: 0;
+}
+
+.voiceselect > .options {
+  display: none;
+  overflow-y: auto;
+}
+
+.voiceselect.open > .options {
+  display: block;
+}
+
+.current-voice {
+  color: #7f7f7f;
+}
+
+.voiceselect:not(.open) > button,
+.voiceselect .option:last-child {
+  border-radius: 0 0 3px 3px;
+}
diff --git a/toolkit/themes/shared/narrateControls.css b/toolkit/themes/shared/narrateControls.css
deleted file mode 100644
index 91d02d85a..000000000
--- a/toolkit/themes/shared/narrateControls.css
+++ /dev/null
@@ -1,185 +0,0 @@
-:scope {
-  --border-color: #e5e5e5;
-}
-
-#narrate-toggle > svg {
-  display: block;
-  margin: 0 8px;
-}
-
-.dropdown-popup button {
-  background-color: transparent;
-}
-
-.dropdown-popup button:hover:not(:disabled) {
-  background-color: #eaeaea;
-}
-
-.narrate-row {
-  display: flex;
-  align-items: center;
-  min-height: 40px;
-  box-sizing: border-box;
-}
-
-.narrate-row:not(:first-child) {
-  border-top: 1px solid var(--border-color);
-}
-
-/* Control buttons */
-
-#narrate-control > button {
-  background-size: 24px 24px;
-  background-repeat: no-repeat;
-  background-position: center center;
-  height: 64px;
-  width: 100px;
-  border: none;
-  color: #666;
-  box-sizing: border-box;
-}
-
-#narrate-control > button:not(:first-child) {
-  border-left: 1px solid var(--border-color);
-}
-
-#narrate-skip-previous {
-  border-top-left-radius: 3px;
-  background-image: url("chrome://global/skin/narrate/back.svg#enabled");
-}
-
-#narrate-skip-next {
-  border-top-right-radius: 3px;
-  background-image: url("chrome://global/skin/narrate/forward.svg#enabled");
-}
-
-#narrate-skip-previous:disabled {
-  background-image: url("chrome://global/skin/narrate/back.svg#disabled");
-}
-
-#narrate-skip-next:disabled {
-  background-image: url("chrome://global/skin/narrate/forward.svg#disabled");
-}
-
-#narrate-start-stop {
-  background-image: url("chrome://global/skin/narrate/start.svg");
-}
-
-#narrate-dropdown.speaking #narrate-start-stop {
-  background-image: url("chrome://global/skin/narrate/stop.svg");
-}
-
-/* Rate control */
-
-#narrate-rate::before, #narrate-rate::after {
-  content: '';
-  width: 48px;
-  height: 40px;
-  background-position: center;
-  background-repeat: no-repeat;
-  background-size: 24px auto;
-}
-
-#narrate-rate::before {
-  background-image: url("chrome://global/skin/narrate/slow.svg");
-}
-
-#narrate-rate::after {
-  background-image: url("chrome://global/skin/narrate/fast.svg");
-}
-
-#narrate-rate-input {
-  margin: 0 1px;
-  flex-grow: 1;
-}
-
-#narrate-rate-input::-moz-range-track {
-  background-color: #979797;
-  height: 2px;
-}
-
-#narrate-rate-input::-moz-range-progress {
-  background-color: #2EA3FF;
-  height: 2px;
-}
-
-#narrate-rate-input::-moz-range-thumb {
-  background-color: #808080;
-  height: 16px;
-  width: 16px;
-  border-radius: 8px;
-  border-width: 0;
-}
-
-#narrate-rate-input:active::-moz-range-thumb {
-  background-color: #2EA3FF;
-}
-
-/* Voice selection */
-
-.voiceselect {
-  width: 100%;
-}
-
-.voiceselect > button.select-toggle,
-.voiceselect > .options > button.option {
-  -moz-appearance: none;
-  border: none;
-  width: 100%;
-  min-height: 40px;
-}
-
-.voiceselect.open > button.select-toggle {
-  border-bottom: 1px solid var(--border-color);
-}
-
-.voiceselect > button.select-toggle::after {
-  content: '';
-  background-image: url("chrome://global/skin/narrate/arrow.svg");
-  background-position: center;
-  background-repeat: no-repeat;
-  background-size: 12px 12px;
-  display: inline-block;
-  width: 1.5em;
-  height: 1em;
-  vertical-align: middle;
-}
-
-.voiceselect > .options > button.option:not(:first-child) {
-  border-top: 1px solid var(--border-color);
-}
-
-.voiceselect > .options > button.option  {
-  box-sizing: border-box;
-}
-
-.voiceselect > .options:not(.hovering) > button.option:focus {
-  background-color: #eaeaea;
-}
-
-.voiceselect > .options:not(.hovering) > button.option:hover:not(:focus) {
-  background-color: transparent;
-}
-
-.voiceselect > .options > button.option::-moz-focus-inner {
-  outline: none;
-  border: 0;
-}
-
-.voiceselect > .options {
-  display: none;
-  overflow-y: auto;
-}
-
-.voiceselect.open > .options {
-  display: block;
-}
-
-.current-voice {
-  color: #7f7f7f;
-}
-
-.voiceselect:not(.open) > button,
-.option:last-child {
-  border-radius: 0 0 3px 3px;
-}
diff --git a/toolkit/themes/shared/reader/RM-Content-Width-Minus-42x16.svg b/toolkit/themes/shared/reader/RM-Content-Width-Minus-42x16.svg
index 48bbb9e89..482a392fb 100644
--- a/toolkit/themes/shared/reader/RM-Content-Width-Minus-42x16.svg
+++ b/toolkit/themes/shared/reader/RM-Content-Width-Minus-42x16.svg
@@ -1,13 +1,10 @@
 <?xml version="1.0" encoding="utf-8"?>
-<!DOCTYPE svg PUBLIC "-//W3C//DTD SVG 1.1//EN" "http://www.w3.org/Graphics/SVG/1.1/DTD/svg11.dtd">
 
 <!-- This Source Code Form is subject to the terms of the Mozilla Public
    - License, v. 2.0. If a copy of the MPL was not distributed with this
    - file, You can obtain one at http://mozilla.org/MPL/2.0/. -->
 
-<svg version="1.1"
-     xmlns="http://www.w3.org/2000/svg"
-     xmlns:xlink="http://www.w3.org/1999/xlink"
+<svg xmlns="http://www.w3.org/2000/svg"
      width="42"
      height="16"
      viewBox="0 0 42 16"
diff --git a/toolkit/themes/shared/reader/RM-Content-Width-Plus-44x16.svg b/toolkit/themes/shared/reader/RM-Content-Width-Plus-44x16.svg
index bcdcbe8ad..da02e608f 100644
--- a/toolkit/themes/shared/reader/RM-Content-Width-Plus-44x16.svg
+++ b/toolkit/themes/shared/reader/RM-Content-Width-Plus-44x16.svg
@@ -1,13 +1,10 @@
 <?xml version="1.0" encoding="utf-8"?>
-<!DOCTYPE svg PUBLIC "-//W3C//DTD SVG 1.1//EN" "http://www.w3.org/Graphics/SVG/1.1/DTD/svg11.dtd">
 
 <!-- This Source Code Form is subject to the terms of the Mozilla Public
    - License, v. 2.0. If a copy of the MPL was not distributed with this
    - file, You can obtain one at http://mozilla.org/MPL/2.0/. -->
 
-<svg version="1.1"
-     xmlns="http://www.w3.org/2000/svg"
-     xmlns:xlink="http://www.w3.org/1999/xlink"
+<svg xmlns="http://www.w3.org/2000/svg"
      width="44"
      height="16"
      viewBox="0 0 44 16"
diff --git a/toolkit/themes/shared/reader/RM-Line-Height-Minus-38x14.svg b/toolkit/themes/shared/reader/RM-Line-Height-Minus-38x14.svg
index 05d52828a..59517c246 100644
--- a/toolkit/themes/shared/reader/RM-Line-Height-Minus-38x14.svg
+++ b/toolkit/themes/shared/reader/RM-Line-Height-Minus-38x14.svg
@@ -1,13 +1,10 @@
 <?xml version="1.0" encoding="utf-8"?>
-<!DOCTYPE svg PUBLIC "-//W3C//DTD SVG 1.1//EN" "http://www.w3.org/Graphics/SVG/1.1/DTD/svg11.dtd">
 
 <!-- This Source Code Form is subject to the terms of the Mozilla Public
    - License, v. 2.0. If a copy of the MPL was not distributed with this
    - file, You can obtain one at http://mozilla.org/MPL/2.0/. -->
 
-<svg version="1.1"
-     xmlns="http://www.w3.org/2000/svg"
-     xmlns:xlink="http://www.w3.org/1999/xlink"
+<svg xmlns="http://www.w3.org/2000/svg"
      width="38"
      height="14"
      viewBox="0 0 38 14"
diff --git a/toolkit/themes/shared/reader/RM-Line-Height-Plus-38x24.svg b/toolkit/themes/shared/reader/RM-Line-Height-Plus-38x24.svg
index 0a5ee0dcc..ba50c5a52 100644
--- a/toolkit/themes/shared/reader/RM-Line-Height-Plus-38x24.svg
+++ b/toolkit/themes/shared/reader/RM-Line-Height-Plus-38x24.svg
@@ -1,13 +1,10 @@
 <?xml version="1.0" encoding="utf-8"?>
-<!DOCTYPE svg PUBLIC "-//W3C//DTD SVG 1.1//EN" "http://www.w3.org/Graphics/SVG/1.1/DTD/svg11.dtd">
 
 <!-- This Source Code Form is subject to the terms of the Mozilla Public
    - License, v. 2.0. If a copy of the MPL was not distributed with this
    - file, You can obtain one at http://mozilla.org/MPL/2.0/. -->
 
-<svg version="1.1"
-     xmlns="http://www.w3.org/2000/svg"
-     xmlns:xlink="http://www.w3.org/1999/xlink"
+<svg xmlns="http://www.w3.org/2000/svg"
      width="38"
      height="24"
      viewBox="0 0 38 24"
diff --git a/toolkit/themes/shared/reader/RM-Type-Controls-Arrow.svg b/toolkit/themes/shared/reader/RM-Type-Controls-Arrow.svg
index 837392ff3..9c663119f 100644
--- a/toolkit/themes/shared/reader/RM-Type-Controls-Arrow.svg
+++ b/toolkit/themes/shared/reader/RM-Type-Controls-Arrow.svg
@@ -1,8 +1,8 @@
-<?xml version="1.0" encoding="utf-8"?>

-<!-- This Source Code Form is subject to the terms of the Mozilla Public

-   - License, v. 2.0. If a copy of the MPL was not distributed with this

-   - file, You can obtain one at http://mozilla.org/MPL/2.0/. -->

-<svg xmlns="http://www.w3.org/2000/svg" viewBox="0 0 24 24">

-  <polygon opacity="0.15"  points="16.583,0.015 16.569,0 4.583,12 16.569,24 16.583,23.985"/>

-  <polygon fill="#fbfbfb" points="16.575,1.021 16.561,1.008 5.583,12 16.577,23.008 16.591,22.994 "/>

-</svg>

+<?xml version="1.0" encoding="utf-8"?>
+<!-- This Source Code Form is subject to the terms of the Mozilla Public
+   - License, v. 2.0. If a copy of the MPL was not distributed with this
+   - file, You can obtain one at http://mozilla.org/MPL/2.0/. -->
+<svg xmlns="http://www.w3.org/2000/svg" viewBox="0 0 16 24">
+  <polygon points="16.58 0.01 16.57 0 4.58 12 16.57 24 16.58 23.98 16.58 0.01" fill="#b5b5b5"/>
+  <polyline points="16.63 1.51 6.08 12.01 16.63 22.5" fill="#fbfbfb"/>
+</svg>