diff --git a/book.json b/book.json
new file mode 100644
index 0000000..f74ed7d
--- /dev/null
+++ b/book.json
@@ -0,0 +1,6 @@
+{
+  "styles": {
+    "pdf": "style.css",
+    "website": "style.css"
+  }
+}