diff --git a/readme.txt b/readme.txt
index 84ec296..1a84dea 100644
--- a/readme.txt
+++ b/readme.txt
@@ -10,3 +10,7 @@ to style a site, put this in a css file somewhere:
 and any of the optional modules you want.
 a list of actively hosted modules can be seen in this repo in the modules folder and at
 https://styles.alv.cx/modules/
+
+there are some variables you may want to use to keep your site's styling consistent and you can
+view them in the `:root` section of `base.css` and any module you use.
+