feature: 增加 tags 標簽外掛 - label

improvement: 優化 pjax 下 404 頁面

source/css/_mode/darkmode.styl

@@ -91,6 +91,7 @@ if hexo-config('darkmode.enable') || hexo-config('display_mode') == 'dark'
     .hide-button,
     .btn-beautify,
     .mermaid,
+    .hl-label,
     .post-outdate-notice,
     .error-img,
     #article-container iframe,

source/css/_mode/readmode.styl

@@ -173,24 +173,15 @@ if hexo-config('readmode')
         border: 1px solid var(--gray) !important
 
       .hide-button,
-      .btn-beautify
+      .btn-beautify,
+      .hl-label
+        border: 1px solid var(--gray) !important
         background: var(--readmode-light-color) !important
         color: var(--font-color) !important
 
-      .btn-beautify
-        border: 1px solid var(--gray) !important
-
       .button--animated:before
         background: var(--readmode-light-color) !important
 
-      .hide-inline,
-      .hide-block
-        & >.hide-button
-          border: 1px solid var(--gray)
-
-        & > .button--animated:before
-          background: var(--readmode-light-color)
-
       .note
         border: 2px solid var(--gray)
         border-left-color: var(--gray) !important