diff --git a/static/css/styles.css b/static/css/styles.css
index f64b51b..55d53fc 100644
--- a/static/css/styles.css
+++ b/static/css/styles.css
@@ -354,7 +354,7 @@ body {
 
 .header {
 	background-color: lightgray;
-	background-size: 100%;
+	background-size: cover;
 	background-position: bottom;
 	display: inline-block;
 	z-index: 1; /* this prevents images with css filters from appearing above the header when in portrait mode */