1 files changed, 51 insertions, 0 deletions
diff --git a/toolkit/themes/windows/global/tabbox.css b/toolkit/themes/windows/global/tabbox.css
new file mode 100644
index 0000000000..41fa020674
--- /dev/null
+++ b/toolkit/themes/windows/global/tabbox.css
@@ -0,0 +1,51 @@
+/* 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/. */
+
+/* ===== tabbox.css =================================================
+  == Styles used by XUL tab-related elements.
+  ======================================================================= */
+
+@namespace url("http://www.mozilla.org/keymaster/gatekeeper/there.is.only.xul");
+
+/* ::::: tabpanels ::::: */
+
+tabpanels {
+  appearance: auto;
+  -moz-default-appearance: tabpanels;
+  padding: 8px;
+  color: -moz-DialogText;
+  /* These don't have non-native theme support, so force them to light mode to
+   * use the native windows theme. */
+  color-scheme: light;
+}
+
+/* ::::: tab ::::: */
+
+tab {
+  appearance: auto;
+  -moz-default-appearance: tab;
+  margin-top: 2px;
+  padding: 1px 4px 2px;
+  color: -moz-DialogText;
+  /* These don't have non-native theme support, so force them to light mode to
+   * use the native windows theme. */
+  color-scheme: light;
+}
+
+tab:where([visuallyselected="true"]) {
+  margin-top: 0;
+  padding: 1px 6px 4px;
+}
+
+tab:where(:first-of-type[visuallyselected="true"]) {
+  padding-inline: 5px;
+}
+
+.tab-text {
+  margin: 0 !important;
+}
+
+tab:-moz-focusring > .tab-middle {
+  outline: var(--default-focusring);
+}