diff --git a/.gitmodules b/.gitmodules
new file mode 100644
index 0000000..22b482e
--- /dev/null
+++ b/.gitmodules
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+[submodule "markdown-css-themes"]
+	path = markdown-css-themes
+	url = https://github.com/jasonm23/markdown-css-themes
diff --git a/markdown-css-themes b/markdown-css-themes
new file mode 160000
index 0000000..390915b
--- /dev/null
+++ b/markdown-css-themes
@@ -0,0 +1 @@
+Subproject commit 390915b8a7d5cf753fb81c01c5bf32ba09b82390