diff --git a/sys/modules/gtklock.nix b/sys/modules/gtklock.nix
index 1450704..3600b41 100644
--- a/sys/modules/gtklock.nix
+++ b/sys/modules/gtklock.nix
@@ -24,7 +24,7 @@ in {
       style = ''
         /* Main lockscreen window */
         window {
-          background-color: rgba(20, 20, 20, 0.9); /* dark, slightly translucent */
+          background-color: black;
           color: #eaeaea;
           font-family: "JetBrains Mono", monospace;
           font-size: 14px;
@@ -32,7 +32,7 @@ in {
 
         /* Container for clock + prompt */
         #main-box {
-          background: transparent;
+          background: black;
           border: none;
           border-radius: 0;
           padding: 0;
@@ -56,7 +56,7 @@ in {
 
         /* Password entry */
         entry {
-          background-color: rgba(0, 0, 0, 0.5);
+          background-color: black;
           color: #ffffff;
           border: none;
           border-radius: 0;