diff --git a/incorporealcms/static/css/dark.css b/incorporealcms/static/css/dark.css
index 854d854..e3a5230 100644
--- a/incorporealcms/static/css/dark.css
+++ b/incorporealcms/static/css/dark.css
@@ -1,3 +1,4 @@
+/* common styling via the base.css, used in light and dark */
 @import '/static/css/base.css';
 
 html {
diff --git a/incorporealcms/static/css/light.css b/incorporealcms/static/css/light.css
index e9b83f3..923b827 100644
--- a/incorporealcms/static/css/light.css
+++ b/incorporealcms/static/css/light.css
@@ -1,3 +1,4 @@
+/* common styling via the base.css, used in light and dark */
 @import '/static/css/base.css';
 
 html {
diff --git a/incorporealcms/static/css/plain.css b/incorporealcms/static/css/plain.css
index 264e44a..46782ef 100644
--- a/incorporealcms/static/css/plain.css
+++ b/incorporealcms/static/css/plain.css
@@ -1,4 +1,4 @@
-
+/* specify almost no styling, just fix some image rendering */
 .img-25 {
     max-width: 25% !important;
 }