diff --git a/themes/luci-theme-openwrt-2020/htdocs/luci-static/openwrt2020/cascade.css b/themes/luci-theme-openwrt-2020/htdocs/luci-static/openwrt2020/cascade.css
index c6e5d77428..e251df5127 100644
--- a/themes/luci-theme-openwrt-2020/htdocs/luci-static/openwrt2020/cascade.css
+++ b/themes/luci-theme-openwrt-2020/htdocs/luci-static/openwrt2020/cascade.css
@@ -54,6 +54,10 @@ body {
 	min-width: 100%;
 }
 
+abbr[title], acronym[title] {
+	text-decoration: dotted underline;
+}
+
 /*
  * scaffholding
  */