1 files changed, 83 insertions, 0 deletions
diff --git a/browser/base/content/tabbrowser.css b/browser/base/content/tabbrowser.css
new file mode 100644
index 0000000000..a0feb36906
--- /dev/null
+++ b/browser/base/content/tabbrowser.css
@@ -0,0 +1,83 @@
+/* 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/. */
+
+.tab-close-button[pinned],
+#tabbrowser-tabs[closebuttons="activetab"] > #tabbrowser-arrowscrollbox > .tabbrowser-tab > .tab-stack > .tab-content > .tab-close-button:not([selected="true"]),
+.tab-icon-pending:not([pendingicon]),
+.tab-icon-pending[busy],
+.tab-icon-pending[pinned],
+.tab-icon-image:not([src], [pinned], [crashed], [pictureinpicture])[selected],
+.tab-icon-image:not([src], [pinned], [crashed], [sharing], [pictureinpicture]),
+.tab-icon-image[busy],
+.tab-throbber:not([busy]),
+.tab-icon-sound:not([soundplaying], [muted], [activemedia-blocked], [pictureinpicture]),
+.tab-icon-sound[pinned],
+.tab-sharing-icon-overlay,
+.tab-icon-overlay {
+  display: none;
+}
+
+.tab-sharing-icon-overlay[sharing]:not([selected]),
+.tab-icon-overlay[soundplaying][pinned],
+.tab-icon-overlay[muted][pinned],
+.tab-icon-overlay[activemedia-blocked][pinned],
+.tab-icon-overlay[pictureinpicture],
+.tab-icon-overlay[crashed] {
+  display: -moz-box;
+}
+
+.tab-label {
+  white-space: nowrap;
+}
+
+.tab-label-container {
+  overflow: hidden;
+}
+
+.tab-label-container[pinned] {
+  width: 0;
+}
+
+.tab-label-container[textoverflow][labeldirection=ltr]:not([pinned]),
+.tab-label-container[textoverflow]:not([labeldirection], [pinned]):-moz-locale-dir(ltr) {
+  direction: ltr;
+  mask-image: linear-gradient(to left, transparent, black 2em);
+}
+
+.tab-label-container[textoverflow][labeldirection=rtl]:not([pinned]),
+.tab-label-container[textoverflow]:not([labeldirection], [pinned]):-moz-locale-dir(rtl) {
+  direction: rtl;
+  mask-image: linear-gradient(to right, transparent, black 2em);
+}
+
+tabpanels {
+  background-color: transparent;
+}
+
+/* Apply crisp rendering for favicons at exactly 2dppx resolution */
+@media (resolution: 2dppx) {
+  .tab-icon-image {
+    image-rendering: -moz-crisp-edges;
+  }
+}
+
+.closing-tabs-spacer {
+  pointer-events: none;
+}
+
+#tabbrowser-arrowscrollbox:not(:hover) > .closing-tabs-spacer {
+  transition: width .15s ease-out;
+}
+
+browser[blank],
+browser[pendingpaint] {
+  opacity: 0;
+}
+
+#tabbrowser-tabpanels[pendingpaint] {
+  background-image: url(chrome://browser/skin/tabbrowser/pendingpaint.png);
+  background-repeat: no-repeat;
+  background-position: center center;
+  background-size: 30px;
+}