diff --git a/assets/sass/style.sass b/assets/sass/style.sass
index 6fb8ff3..3f44ed2 100644
--- a/assets/sass/style.sass
+++ b/assets/sass/style.sass
@@ -72,10 +72,13 @@ a
     text-decoration: none
 pre, .page
   box-shadow: $shadow-size $shadow-size $shadow
-img, button, input[type=submit]
+img, button, input[type=submit], iframe
   max-width: 100%
   box-shadow: $shadow-size $shadow-size $bg0
   border: 2px solid $bg0
+iframe
+  display: block
+  margin: auto
 header
   h2
     margin: 0