diff --git a/docs/examples-docs/button.md b/docs/examples-docs/button.md
index 992cc5ccc..91761fff0 100644
--- a/docs/examples-docs/button.md
+++ b/docs/examples-docs/button.md
@@ -7,6 +7,11 @@
     &--bottom-action {
       margin-bottom: 15px;
     }
+
+    &--small,
+    &--normal {
+      margin-right: 10px;
+    }
   }
 
   .zan-doc-demo-block {
diff --git a/package.json b/package.json
index 67c50bf01..0d3d08093 100644
--- a/package.json
+++ b/package.json
@@ -117,6 +117,6 @@
     "webpack": "^3.5.5",
     "webpack-dev-server": "^2.7.1",
     "webpack-merge": "^4.1.0",
-    "zan-doc": "^0.2.6"
+    "zan-doc": "^0.2.9"
   }
 }
diff --git a/yarn.lock b/yarn.lock
index 361847594..e49b9ee00 100644
--- a/yarn.lock
+++ b/yarn.lock
@@ -7970,9 +7970,9 @@ yeast@0.1.2:
   version "0.1.2"
   resolved "https://registry.yarnpkg.com/yeast/-/yeast-0.1.2.tgz#008e06d8094320c372dbc2f8ed76a0ca6c8ac419"
 
-zan-doc@^0.2.6:
-  version "0.2.6"
-  resolved "https://registry.npmjs.org/zan-doc/-/zan-doc-0.2.6.tgz#27cc789460c32f6bed7687e050e2d9063b2725d5"
+zan-doc@^0.2.9:
+  version "0.2.9"
+  resolved "https://registry.npmjs.org/zan-doc/-/zan-doc-0.2.9.tgz#9d8787f2a6502686f3c44dc4ced9d8ca0fbe3d4e"
   dependencies:
     cheerio "0.22.0"
     decamelize "^1.2.0"