diff --git a/src-tauri/src/rpc/mqtt.rs b/src-tauri/src/rpc/mqtt.rs
index 28b8da4..5c40a3d 100644
--- a/src-tauri/src/rpc/mqtt.rs
+++ b/src-tauri/src/rpc/mqtt.rs
@@ -42,7 +42,7 @@ impl MqttConnection {
                     Ok(now_str) => {
                         match client
                             .publish(
-                                "screen-bg-light/desktop/last-online-at",
+                                "screen-bg-light/desktop/online",
                                 QoS::AtLeastOnce,
                                 false,
                                 now_str.as_bytes(),
diff --git a/src/App.tsx b/src/App.tsx
index 5684869..89bd56e 100644
--- a/src/App.tsx
+++ b/src/App.tsx
@@ -30,9 +30,9 @@ function App() {
 
   return (
     <div>
-      <div className="flex justify-between h-1">
+      <div className="flex justify-between">
         {ledStripColors.map((it) => (
-          <span className="h-1 flex-auto" style={{ backgroundColor: it }}></span>
+          <span className=" h-8 flex-auto" style={{ backgroundColor: it }}></span>
         ))}
       </div>