(feat:background) Take up the whole screen

src/ui/css/App.scss

@@ -3,9 +3,17 @@
 @tailwind utilities;
 
 body {
+    @apply w-full h-screen;
+
     margin: 0;
     outline: 0;
     padding: 0;
+
+    overflow: hidden;
+}
+
+.App {
+    @apply w-full h-screen;
 }
 
 p {

src/ui/css/layout/Launcher.scss

@@ -0,0 +1,3 @@
+.Launcher {
+    @apply flex w-full h-full;
+}