diff --git a/public/css/style.css b/public/css/style.css
index ea5410b..63eb9ed 100644
--- a/public/css/style.css
+++ b/public/css/style.css
@@ -72,6 +72,7 @@ select {
 	appearance: none;
 	-webkit-appearance: none;
 	-moz-appearance: none;
+	/* Chevron stroke color is #8b93a7, matching --muted (data URIs can't reference CSS variables). */
 	background-image: url("data:image/svg+xml;charset=UTF-8,%3csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 24 24' fill='none' stroke='%238b93a7' stroke-width='2' stroke-linecap='round' stroke-linejoin='round'%3e%3cpolyline points='6 9 12 15 18 9'%3e%3c/polyline%3e%3c/svg%3e");
 	background-repeat: no-repeat;
 	background-position: right 10px center;
@@ -304,6 +305,7 @@ button.danger {
 }
 
 .reader-card .field select {
+	/* Keep room for the chevron icon within the narrow 90px width. */
 	padding-right: 28px;
 }