diff --git a/composer.json b/composer.json
index d85c845..f838fb3 100644
--- a/composer.json
+++ b/composer.json
@@ -31,6 +31,7 @@
         "expose": [
             "client/dist",
             "client/lang",
+            "css",
             "thirdparty"
         ]
     },
diff --git a/css/comments.css b/css/comments.css
new file mode 100644
index 0000000..68c0778
--- /dev/null
+++ b/css/comments.css
@@ -0,0 +1 @@
+/** Deprecated. Remove in 4.0 release. */