diff --git a/_includes/vars.css b/_includes/vars.css
new file mode 100644
index 0000000..b9e7a4f
--- /dev/null
+++ b/_includes/vars.css
@@ -0,0 +1,4 @@
+:root {
+  --main-color: red;
+  --pane-padding: 5px 42px;
+}