diff --git a/demos/button.html b/demos/button.html
index 674e2f764..f8dbe8985 100644
--- a/demos/button.html
+++ b/demos/button.html
@@ -18,7 +18,7 @@ limitations under the License.
button demo
-
+
diff --git a/demos/card.html b/demos/card.html
index 64d9f82f7..a6a3877b9 100644
--- a/demos/card.html
+++ b/demos/card.html
@@ -18,7 +18,7 @@ limitations under the License.
card demo
-
+