diff --git a/layout/includes/third-party/subtitle.pug b/layout/includes/third-party/subtitle.pug
index 8dbb534..4e04e54 100644
--- a/layout/includes/third-party/subtitle.pug
+++ b/layout/includes/third-party/subtitle.pug
@@ -1,5 +1,5 @@
 - const { effect, source, sub, typed_option } = theme.subtitle
-- let subContent = sub || new Array()
+- let subContent = typeof sub === 'string' ? [sub] : (sub || new Array())
 
 script.
   window.typedJSFn = {
diff --git a/package.json b/package.json
index ad45920..d35cb31 100644
--- a/package.json
+++ b/package.json
@@ -1,6 +1,6 @@
 {
   "name": "hexo-theme-butterfly",
-  "version": "5.5.4",
+  "version": "5.5.5-b1",
   "description": "A Simple and Card UI Design theme for Hexo",
   "main": "package.json",
   "scripts": {
diff --git a/source/css/_layout/third-party.styl b/source/css/_layout/third-party.styl
index 8e85e6c..54ab8c7 100644
--- a/source/css/_layout/third-party.styl
+++ b/source/css/_layout/third-party.styl
@@ -226,5 +226,6 @@ if hexo-config('math.use')
     opacity: 1
 
 +maxWidth768()
-  .fancybox__toolbar__column.is-middle
-    display: none
+  .fancybox__toolbar__column.is-middle,
+  .f-carousel__toolbar__column.is-middle
+    visibility: hidden