diff --git a/.gitmodules b/.gitmodules
new file mode 100644
index 0000000..66fb972
--- /dev/null
+++ b/.gitmodules
@@ -0,0 +1,3 @@
+[submodule "water.css"]
+	path = water.css
+	url = ./private/water.css
diff --git a/water.css b/water.css
new file mode 160000
index 0000000..2f4c5fb
--- /dev/null
+++ b/water.css
@@ -0,0 +1 @@
+Subproject commit 2f4c5fba5e05b86232d0901325d90f5d59036fd2