diff --git a/doc/html/style.css b/doc/html/style.css
index 6aaaf099d373ff2041451357068ff33bd60d9ba2..112b653011615603c2aff9de6340b85fb6f158b8 100644
--- a/doc/html/style.css
+++ b/doc/html/style.css
@@ -235,6 +235,7 @@ input[type="checkbox"] {
 	display: block;
 	width: 100%;
 	height: 0;
+	overflow: hidden;
 	padding-top: 23.1%;
 	background: url("schedmd.png") no-repeat 0 0;
 	background-size: contain;