diff --git a/urara/2024-10-14-obsidian-highlight/+page.md b/urara/2024-10-14-obsidian-highlight/+page.md
index 2be772cc..704558b6 100644
--- a/urara/2024-10-14-obsidian-highlight/+page.md
+++ b/urara/2024-10-14-obsidian-highlight/+page.md
@@ -49,7 +49,7 @@ span.cm-highlight{
 }
 
 
-mark {
+mark:not([class]) {
   background: linear-gradient(
     100deg,
     #ffffaf00 1%,
diff --git a/urara/2024-10-14-obsidian-highlight/subtle-highlight.css b/urara/2024-10-14-obsidian-highlight/subtle-highlight.css
index 90a5d91a..cbbb0703 100644
--- a/urara/2024-10-14-obsidian-highlight/subtle-highlight.css
+++ b/urara/2024-10-14-obsidian-highlight/subtle-highlight.css
@@ -12,7 +12,7 @@ span.cm-highlight{
 }
 
 
-mark {
+mark:not([class]) {
   background: linear-gradient(
     100deg,
     #ffffaf00 1%,