diff --git a/sphinx/source/_static/custom.css b/sphinx/source/_static/custom.css
index 827ccb0baf8..88601c76864 100644
--- a/sphinx/source/_static/custom.css
+++ b/sphinx/source/_static/custom.css
@@ -1,3 +1,10 @@
-.wy-nav-content {
+/**
+ * Copyright (c) Meta Platforms, Inc. and affiliates.
+ *
+ * This source code is licensed under the MIT license found in the
+ * LICENSE file in the root directory of this source tree.
+ */
+
+ .wy-nav-content {
   max-width: initial;
 }
diff --git a/website/docusaurus.config.js b/website/docusaurus.config.js
index 6f451402b77..851704a1521 100644
--- a/website/docusaurus.config.js
+++ b/website/docusaurus.config.js
@@ -1,3 +1,10 @@
+/**
+ * Copyright (c) Meta Platforms, Inc. and affiliates.
+ *
+ * This source code is licensed under the MIT license found in the
+ * LICENSE file in the root directory of this source tree.
+ */
+
 import {themes as prismThemes} from 'prism-react-renderer';
 import remarkMath from 'remark-math';
 import rehypeKatex from 'rehype-katex';
diff --git a/website/src/css/customTheme.css b/website/src/css/customTheme.css
index 44610ee4f7e..82b2521261d 100644
--- a/website/src/css/customTheme.css
+++ b/website/src/css/customTheme.css
@@ -1,4 +1,11 @@
-:root{
+/**
+ * Copyright (c) Meta Platforms, Inc. and affiliates.
+ *
+ * This source code is licensed under the MIT license found in the
+ * LICENSE file in the root directory of this source tree.
+ */
+
+ :root{
   /* --ifm-color-primary-lightest: #283442;
   --ifm-color-primary-lighter: #242E3B;
   --ifm-color-primary-light: #222C38; */