diff --git a/htdocs/css/openwebrx.css b/htdocs/css/openwebrx.css
index e3f83df..a2911a3 100644
--- a/htdocs/css/openwebrx.css
+++ b/htdocs/css/openwebrx.css
@@ -39,6 +39,7 @@ input[type=range]
 {
 	-webkit-appearance: none;
 	margin: 0 0;
+	background: transparent;
 }
 input[type=range]:focus
 {