diff --git a/bootstrap-elements.html b/bootstrap-elements.html
index 423cc195..046fd007 100644
--- a/bootstrap-elements.html
+++ b/bootstrap-elements.html
@@ -1,4 +1,5 @@
 <!DOCTYPE html>
+
 <html>
 <!-- MEMO: update me with `git checkout gh-pages && git merge master && git push origin gh-pages` -->
 <head>
diff --git a/index.html b/index.html
index 62574c16..e625cf15 100644
--- a/index.html
+++ b/index.html
@@ -1,4 +1,5 @@
 <!DOCTYPE html>
+
 <html>
 
 <head>
