diff --git a/frontends/ycdl_flask/static/css/common.css b/frontends/ycdl_flask/static/css/common.css
index 53476cd..2f84b60 100644
--- a/frontends/ycdl_flask/static/css/common.css
+++ b/frontends/ycdl_flask/static/css/common.css
@@ -1,3 +1,8 @@
+/*
+This file contains styles that I want on almost all webpages that I make,
+not specific to one project.
+*/
+
 /*
 These properties are used by javascript functions.
 getComputedStyle(document.documentElement).getPropertyValue("--narrow").trim() === "1"
diff --git a/frontends/ycdl_flask/static/css/ycdl.css b/frontends/ycdl_flask/static/css/ycdl.css
index 18b82f5..6369943 100644
--- a/frontends/ycdl_flask/static/css/ycdl.css
+++ b/frontends/ycdl_flask/static/css/ycdl.css
@@ -1,3 +1,8 @@
+/*
+This file contains styles that apply to all pages within YCDL, but don't
+belong in common.css because they are specifically for this project.
+*/
+
 :root
 {
     --color_primary: white;