diff --git a/theme.css b/theme.css
index 43cd84d..af0ff52 100644
--- a/theme.css
+++ b/theme.css
@@ -333,6 +333,12 @@ body {
 .irc-fg5 { color: #e969a7; }
 .irc-fg12 { color: #50a8ff; }
 
+@media (max-width: 768px) {
+	#sidebar-overlay {
+		background: rgba(0, 0, 0, 0.8);
+	}
+}
+
 @media (max-width: 479px) {
 	#chat .message .from .user::before {
 		content: "<";