diff --git a/CHANGELOG.md b/CHANGELOG.md
index 71fa54c..3f5c792 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -1,2 +1,4 @@
 * BUGFIX
   * fix mermaid default font
+* ENHANCEMENT
+  * add surrounding div with class `gdoc-include` to include shortcode
diff --git a/layouts/shortcodes/include.html b/layouts/shortcodes/include.html
index 8c6f786..17540da 100644
--- a/layouts/shortcodes/include.html
+++ b/layouts/shortcodes/include.html
@@ -1,4 +1,5 @@
 {{$file := .Get "file"}}
+<div class="gdoc-include">
 {{- if eq (.Get "markdown") "true" -}}
 {{- $file | readFile | markdownify -}}
 {{- else if (.Get "language") -}}
@@ -6,3 +7,4 @@
 {{- else -}}
 {{ $file | readFile | safeHTML }}
 {{- end -}}
+</div>