diff --git a/layout/_partial/post/minivaline.ejs b/layout/_partial/post/minivaline.ejs
index 05eaca3..4d8b33b 100644
--- a/layout/_partial/post/minivaline.ejs
+++ b/layout/_partial/post/minivaline.ejs
@@ -29,28 +29,12 @@
     --ohhho-color-text: #fff;
     --ohhho-color-card: #252d38;
     --ohhho-color-block: rgba(68, 68, 68, 0.65);
-  }
-  .darkmode
-    .ohhho
-    .vlist
-    .vcard
-    .vcomment-body
-    .text-wrapper
-    .vcomment.expand:before {
-    background: linear-gradient(
+    --ohhho-expand-before-background: linear-gradient(
       180deg,
       rgba(246, 246, 246, 0),
       rgba(0, 0, 0, 0.9)
     );
-  }
-  .darkmode
-    .ohhho
-    .vlist
-    .vcard
-    .vcomment-body
-    .text-wrapper
-    .vcomment.expand:after {
-    background: rgba(0, 0, 0, 0.9);
+    --ohhho-expand-after-background: rgba(0, 0, 0, 0.9);
   }
   .darkmode .ohhho pre {
     background: #888;