diff --git a/main.js b/main.js
index 11f8100..0f995fd 100644
--- a/main.js
+++ b/main.js
@@ -65,10 +65,10 @@
     const text = node.innerText
     if (text === '开') {
         node.innerText = '关'
-        node.style = 'close'
+        node.className = 'close'
     } else {
         node.innerText = '开'
-        node.style = 'open'
+        node.className = 'open'
     }
   }