diff --git a/src/views/knowledge/index.vue b/src/views/knowledge/index.vue
index fb27bed..f0fe178 100644
--- a/src/views/knowledge/index.vue
+++ b/src/views/knowledge/index.vue
@@ -218,6 +218,7 @@ export default {
     border-radius: 7px;
     border: 1px solid #635cff;
     .opacity-button {
+      transition: all 0.5s ease;
       opacity: 1;
     }
   }