diff --git a/themes/luci-theme-openwrt/htdocs/luci-static/openwrt.org/cascade.css b/themes/luci-theme-openwrt/htdocs/luci-static/openwrt.org/cascade.css
index 88697ca534..ce8ab58a3a 100644
--- a/themes/luci-theme-openwrt/htdocs/luci-static/openwrt.org/cascade.css
+++ b/themes/luci-theme-openwrt/htdocs/luci-static/openwrt.org/cascade.css
@@ -663,7 +663,8 @@ img.cbi-image-button {
 	color: #000;
 	display: inline-block;
 	font-size: inherit;
-	-webkit-appearance: none;
+	-webkit-appearance: none; /* nonstandard, should remove in future */
+	appearance: none;
 	background: #fff;
 	text-align: center;
 	font-weight: bold;