Adding client code for new Windows 10 First Run Experience

chrome/browser/resources/welcome/win10/sectioned.css

Index: chrome/browser/resources/welcome/win10/sectioned.css
diff --git a/chrome/browser/resources/welcome/win10/sectioned.css b/chrome/browser/resources/welcome/win10/sectioned.css
new file mode 100644
index 0000000000000000000000000000000000000000..6ab2b6727298fa423b0d87268f6db3cda585f590
--- /dev/null
+++ b/chrome/browser/resources/welcome/win10/sectioned.css
@@ -0,0 +1,297 @@
+/* Copyright 2016 The Chromium Authors. All rights reserved.

[michaelpg, 2016/10/22 03:19:00]

There is still a great deal of duplicated code here. Any reason we can't make a
"common.css"?

[Patrick Monette, 2016/10/24 20:49:39]

Not a very good reason but we'll eventually get rid of one of the versions after
doing some A/B testing. Keeping them separate will make this removal as easy as
possible.

If you feel strongly about this I'll make a common .css file.

[michaelpg, 2016/10/24 21:30:08]

I didn't realize that. Can you add comments -- or even better, a README.md -- to
explain that, with a link to the bug to make the decision?

+ * Use of this source code is governed by a BSD-style license that can be
+ * found in the LICENSE file. */
+
+* {
+  margin: 0;
+  padding: 0;
+}
+
+body {
+  box-sizing: border-box;
+  color: var(--paper-grey-900);
+  display: flex;
+  flex-direction: column;
+  font-size: 100%;
+  justify-content: center;
+  min-height: 100vh;
+}
+
+a {
+  color: var(--google-blue-500);
+  text-decoration: none;
+}
+
+strong {
+  font-weight: 500;
+}
+
+.content {
+  padding: 64px 24px 24px 24px;
+}
+
+.header-logo {
+  content: -webkit-image-set(url(/logo-large.png) 1x,
+                             url(/logo-large2x.png) 2x);
+}
+
+.text {
+  margin: 0 auto;
+  max-width: 45em;
+}
+
+.heading {
+  font-size: 2.125em;
+  margin-bottom: .25em;
+  margin-top: 1.5em;
+}
+
+.subheading {
+  color: var(--google-grey-500);
+  font-size: 1em;
+  margin-bottom: 1.5em;
+  margin-top: .25em;
+  text-align: center;
+}
+
+.sections {
+  margin-bottom: 3em;
+}
+
+.section.expandable {
+  border-top: 1px solid var(--google-grey-300);
+}
+
+.section.expandable:last-child {
+  border-bottom: 1px solid var(--google-grey-300);
+}
+
+.section.expandable .section-heading {
+  color: var(--google-blue-500);
+  cursor: pointer;
+}
+
+.section-heading {
+  align-items: center;
+  display: flex;
+  padding: 1.5em 0;
+}
+
+.section-heading-text {
+  flex: 1;
+  font-weight: 500;
+}
+
+.section.expandable .section-heading-text {
+ font-weight: normal;
+}
+
+.section.expandable.expanded .section-heading-text {
+  font-weight: 500;
+}
+
+.section-heading-expand {
+  height: 1.25em;
+  opacity: 0.54;
+  transition: transform 150ms cubic-bezier(.4, .2, 0, 1) 50ms;
+  width: 1.25em;
+}
+
+.section.expandable.expanded .section-heading-expand {
+  transform: rotate(180deg);
+  transition-delay: 150ms;
+}
+
+.section-steps {
+  overflow: hidden;
+}
+
+.section-steps li {
+  margin-bottom: 1em;
+  margin-left: 1.25em;
+  padding-left: 1em;
+}
+
+.section-steps li:last-child {
+  margin-bottom: 1em;
+}
+
+.section.expandable .section-steps {
+  max-height: 0;
+  opacity: 0;
+  transition: max-height 300ms cubic-bezier(.4, .2, 0, 1) 50ms, opacity 150ms;
+}
+
+.section.expandable.expanded .section-steps {
+  max-height: 8.75em;
+  opacity: 1;
+  transition: max-height 300ms cubic-bezier(.4, .2, 0, 1) 50ms,
+              opacity 150ms 250ms;
+}
+
+.button {
+  -webkit-font-smoothing: antialiased;
+  background: var(--paper-blue-a200);
+  border-radius: 2px;
+  box-shadow: inset 0 0 0 1px rgba(0, 0, 0, .1);
+  color: #fff;
+  display: inline-block;
+  font-size: .74em;
+  font-weight: 500;
+  line-height: 1.75em;
+  min-width: 2em;
+  padding: 0 1em;
+  text-align: center;
+  transition: 300ms cubic-bezier(.4, .2, 0, 1);
+  will-change: box-shadow;
+}
+
+.button:hover {
+  background: var(--paper-blue-a400);
+  box-shadow: inset 0 0 0 1px rgba(0, 0, 0, .1), 0 1px 2px rgba(0, 0, 0, .24);
+}
+
+.bg {
+  background: var(--paper-light-blue-700);
+  flex: 1;
+  margin-top: 96px;
+  padding: 24px;
+}
+
+.logo-small {
+  content: -webkit-image-set(url(/logo-small.png) 1x,
+                             url(/logo-small2x.png) 2x);
+  display: inline;
+  height: 1.25em;
+  vertical-align: top;
+  width: 1.25em;
+}
+
+.screenshots {
+  display: block;
+  height: 440px;
+  margin: 0 auto;
+  max-width: 100%;
+  position: relative;
+  top: -96px;
+  width: 720px;
+}
+
+.screenshot-image {
+  box-shadow: 0 0 8px rgba(0, 0, 0, .12), 0 4px 16px rgba(0, 0, 0, .24);
+  height: 56vw;
+  max-height: 440px;
+  max-width: 720px;
+  min-height: 294px;
+  min-width: 480px;
+  position: absolute;
+  transition: opacity 150ms;
+  width: 92vw;
+}
+
+.screenshot-image.hidden {
+  opacity: 0;
+}
+
+#screenshot-image--default {
+  background: -webkit-image-set(
+    url(https://www.gstatic.com/chrome/login/win10/default-large.webp) 1x,
+    url(https://www.gstatic.com/chrome/login/win10/default-large@2x.webp) 2x);
+  background-repeat: no-repeat;
+  background-size: cover;
+}
+
+#screenshot-image--taskbar {
+  background: -webkit-image-set(
+    url(https://www.gstatic.com/chrome/login/win10/pin-large.webp) 1x,
+    url(https://www.gstatic.com/chrome/login/win10/pin-large@2x.webp) 2x);
+  background-repeat: no-repeat;
+  background-size: cover;
+}
+
+.screenshot-html-overlay {
+  box-sizing: border-box;
+  font-size: 7px;
+  line-height: 0;
+  position: absolute;
+}
+
+#screenshot-html-overlay--browser {
+  left: 35.8%;
+  top: 75.8%;
+}
+
+#screenshot-html-overlay--edge {
+  left: 41.5%;
+  top: 82.4%;
+}
+
+#screenshot-html-overlay--taskbar {
+  left: 62.2%;
+  top: 81.5%;
+}
+
+#screenshot-html-overlay--taskbar div {
+  color: #ccc;
+  font-family: Tahoma, Verdana, Segoe, sans-serif;
+  font-weight: 500;
+}
+
+#screenshot-html-overlay--icon {
+  background-image: url(/logo-small.png);
+  background-size: cover;
+  height: 5.8%;
+  left: 70.60%;
+  top: 93.1%;
+  width: 3.5%;
+}
+
+/* This value is precisely set so that the text over the screenshot starts
+   scaling at the same time the image starts scaling too. */
+@media (min-width: 520px) {
+  .screenshot-html-overlay {
+    font-size: 1.35vw;
+  }
+}
+
+/* Font-size used when the screenshot exactly reaches its max size. */
+@media (min-width: 780px) {
+  .screenshot-html-overlay {
+    font-size: 10.5px;
+  }
+}
+
+@media (min-width: 1280px) {
+  body {
+    flex-direction: row;
+  }
+
+  .content {
+    align-items: center;
+    display: flex;
+    flex: 1;
+    justify-content: flex-end;
+    padding: 96px;
+  }
+
+  .text {
+    margin: 0 180px;
+    max-width: none;
+    width: 400px;
+  }
+
+  .bg {
+    align-items: center;
+    display: flex;
+    flex: 1;
+    margin: 0;
+    max-width: 42%;
+    padding: 0;
+  }
+
+  .screenshots {
+    margin-left: -180px;
+    max-width: none;
+    top: 0;
+  }
+}