1 files changed, 37 insertions, 0 deletions
diff --git a/toolkit/components/alerts/alert.css b/toolkit/components/alerts/alert.css
new file mode 100644
index 0000000000..273646f399
--- /dev/null
+++ b/toolkit/components/alerts/alert.css
@@ -0,0 +1,37 @@
+/* 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/. */
+
+#alertBox[animate] {
+  animation-duration: 20s;
+  animation-fill-mode: both;
+  animation-name: alert-animation;
+}
+
+#alertBox[animate]:not([clicked], [closing]):hover {
+  animation-play-state: paused;
+}
+
+#alertBox:not([hasOrigin]) > box > #alertTextBox > #alertFooter,
+#alertBox:not([hasIcon]) > box > #alertIcon,
+#alertImage:not([src]) {
+  display: none;
+}
+
+#alertTitleBox {
+  justify-content: center;
+  align-items: center;
+}
+
+.alertText {
+  white-space: pre-wrap;
+}
+
+@keyframes alert-animation {
+  from {
+    visibility: visible;
+  }
+  to {
+    visibility: hidden;
+  }
+}