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diff --git a/src/assets/background-img/city-night.jpg b/src/assets/background-img/city-night.jpg
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diff --git a/src/assets/background-img/game-room.jpg b/src/assets/background-img/game-room.jpg
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diff --git a/src/assets/background-img/old-windows.jpg b/src/assets/background-img/old-windows.jpg
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diff --git a/src/assets/sound/info.mp3 b/src/assets/sound/info.mp3
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diff --git a/src/assets/sound/info4.mp3 b/src/assets/sound/info4.mp3
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diff --git a/src/assets/sound/mouse-click.mp3 b/src/assets/sound/mouse-click.mp3
deleted file mode 100644
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diff --git a/src/assets/sound/startup-sound.mp3 b/src/assets/sound/startup-sound.mp3
deleted file mode 100644
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diff --git a/src/assets/wallpapers/wallpaper.jpg b/src/assets/wallpapers/wallpaper.jpg
new file mode 100644
index 0000000..86d28be
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diff --git a/src/os/Shortcut/Shortcut.tsx b/src/os/Shortcut/Shortcut.tsx
index 3e479f9..501d8b7 100644
--- a/src/os/Shortcut/Shortcut.tsx
+++ b/src/os/Shortcut/Shortcut.tsx
@@ -24,16 +24,12 @@ export default function Shortcut({
       {...props}
     >
       <Icon
-        className={twMerge(
-          "text-text-default",
-          "size-9 md:size-10",
-          isSelected && "bg-secondary/80"
-        )}
+        className={twMerge("text-muted", "size-9 md:size-10", isSelected && "bg-secondary/80")}
         aria-hidden="true"
       />
       <span
         className={twMerge(
-          "text-text-default text-xs select-none md:text-sm",
+          "text-muted text-xs select-none md:text-sm",
           isSelected && "bg-secondary/80 focus-dotted",
           isFocused && "focus-dotted"
         )}
diff --git a/src/pages/os/OsMain.tsx b/src/pages/os/OsMain.tsx
index 08fea31..fb8c740 100644
--- a/src/pages/os/OsMain.tsx
+++ b/src/pages/os/OsMain.tsx
@@ -12,6 +12,7 @@ export default function OsMain() {
   const ref = useRef<HTMLElement | null>(null);
   const [selectedShortcutId, setSelectedShortcutId] = useState<string | null>(null);
   const [focusedShortcutId, setFocusedShortcutId] = useState<string | null>(null);
+
   const windows = useWindowStore((state) => state.windows);
   const openWindow = useWindowStore((state) => state.openWindow);
   const closeWindow = useWindowStore((state) => state.closeWindow);
@@ -41,8 +42,12 @@ export default function OsMain() {
   };
 
   return (
-    <main className="bg-base-2 flex h-dvh max-h-dvh flex-col overflow-hidden">
-      <section ref={ref} className="relative flex-1 overflow-hidden p-4" aria-label="데스크톱">
+    <main className="flex h-dvh max-h-dvh flex-col overflow-hidden bg-[#e9e0fb]">
+      <section
+        ref={ref}
+        className="relative flex-1 overflow-hidden bg-[url(@/assets/wallpapers/wallpaper.jpg)] bg-size-[40%] bg-center bg-no-repeat p-4"
+        aria-label="데스크톱"
+      >
         <div
           className="grid h-full w-full auto-cols-max grid-flow-row auto-rows-max gap-6 md:gap-8"
           aria-label="바로가기"
diff --git a/src/styles/globals.css b/src/styles/globals.css
index 6bd9648..3ba8a94 100644
--- a/src/styles/globals.css
+++ b/src/styles/globals.css
@@ -55,6 +55,7 @@ body {
 body {
   font-size: 11px;
   overscroll-behavior: none;
+  word-break: keep-all;
 }
 
 @media (min-width: 768px) {