diff --git a/site/introduction.md b/site/introduction.md
index 8ff0919..5486174 100644
--- a/site/introduction.md
+++ b/site/introduction.md
@@ -32,7 +32,7 @@ You can learn more about BEM rules from here: http://getbem.com/ .
Material UI works well with [Material Icons](https://fonts.google.com/icons?selected=Material+Icons):
{% example %}
-
+edit
{% endexample %}
@@ -40,7 +40,7 @@ Material UI works well with [Material Icons](https://fonts.google.com/icons?sele
Or use svg format icon:
{% example %}
-
+
{% endexample %}
diff --git a/themes/docs/layout/index.ejs b/themes/docs/layout/index.ejs
index bf96b6d..b6e469d 100644
--- a/themes/docs/layout/index.ejs
+++ b/themes/docs/layout/index.ejs
@@ -71,7 +71,7 @@