1 files changed, 76 insertions, 0 deletions
diff --git a/comm/calendar/base/themes/common/imip.css b/comm/calendar/base/themes/common/imip.css
new file mode 100644
index 0000000000..893e633706
--- /dev/null
+++ b/comm/calendar/base/themes/common/imip.css
@@ -0,0 +1,76 @@
+/* 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/. */
+
+.invitation-details {
+  text-align: center;
+  margin: 1em 0;
+  padding: 1em;
+}
+
+.invitation-details[open] > summary {
+  margin-bottom: 0.5em;
+}
+
+.invitation-border {
+  border: 3px solid -moz-default-color;
+  margin-inline-start: auto;
+  margin-inline-end: auto;
+  width: -moz-fit-content;
+  height: -moz-fit-content;
+}
+
+.invitation-table {
+  border-collapse: collapse;
+  width: 40em;
+}
+
+.invitation-table :is(td, th) {
+  padding: 3px;
+  vertical-align: baseline;
+}
+
+.invitation-table td {
+  overflow-wrap: anywhere;
+}
+
+.invitation-table .description {
+  width: 9em;
+  text-align: end;
+  font-weight: normal;
+  border-inline-end: 1px solid hsla(0, 0%, 50%, .2);
+  background-color: hsla(0, 0%, 50%, .2);
+}
+
+.invitation-table .content {
+  width: 29em;
+}
+
+.invitation-table .added {
+  color: rgb(255, 0, 0);
+  text-decoration-line: none;
+}
+
+.invitation-table .modified {
+  color: rgb(255, 0, 0);
+  font-style: italic;
+}
+
+.invitation-table .removed {
+  color: rgb(125, 125, 125);
+}
+
+@media (prefers-contrast) {
+  .invitation-table .added {
+    color: currentColor;
+    font-weight: bold;
+  }
+
+  .invitation-table .modified {
+    color: currentColor;
+  }
+
+  .invitation-table .removed {
+    color: currentColor;
+  }
+}