diff --git a/demos/button.html b/demos/button.html
index f8dbe8985..42fb52775 100644
--- a/demos/button.html
+++ b/demos/button.html
@@ -18,6 +18,7 @@ limitations under the License.
button demo
+
@@ -44,7 +45,7 @@ limitations under the License.
diff --git a/demos/card.html b/demos/card.html
index a6a3877b9..90af1d815 100644
--- a/demos/card.html
+++ b/demos/card.html
@@ -18,6 +18,7 @@ limitations under the License.
card demo
+