diff --git a/assets/css/dark.css b/assets/css/dark.css
index a78020b..5a664f1 100644
--- a/assets/css/dark.css
+++ b/assets/css/dark.css
@@ -19,10 +19,8 @@
 		color: #c80;
 	}
 
-	blockquote,
-	:not(pre) > code,
-	img,
-	pre {
+	pre,
+	:not(pre) > code {
 		border-color: #444;
 	}
 
diff --git a/assets/css/main.css b/assets/css/main.css
index 63593e9..c840617 100644
--- a/assets/css/main.css
+++ b/assets/css/main.css
@@ -55,6 +55,7 @@ blockquote {
 	}
 }
 
+/* WCAG guidelines recommend signalling the current page */
 a[aria-current="page"] {
 	font-weight: bold;
 }
@@ -144,7 +145,7 @@ img:not(.u-photo) {
  * reducing the number of DOM nodes rendered at once. */
 footer,
 section[role="doc-endnotes"] {
-	border-top: 1px solid #aaa;
+	border-top: 1px solid;
 	content-visibility: auto;
 }