Make it responsive.

frontend/src/App.css

@@ -1,36 +1,8 @@
-#root {
-  max-width: 1280px;
-  margin: 0 auto;
-  padding: 2rem;
-  text-align: center;
-}
-
-.logo {
-  height: 6em;
-  padding: 1.5em;
-  will-change: filter;
-  transition: filter 300ms;
-}
-.logo:hover {
-  filter: drop-shadow(0 0 2em #646cffaa);
-}
-.logo.react:hover {
-  filter: drop-shadow(0 0 2em #61dafbaa);
-}
-
-@keyframes logo-spin {
-  from {
-    transform: rotate(0deg);
-  }
-  to {
-    transform: rotate(360deg);
-  }
-}
-
-@media (prefers-reduced-motion: no-preference) {
-  a:nth-of-type(2) .logo {
-    animation: logo-spin infinite 20s linear;
-  }
+.App {
+  background-color: var(--background-color);
+  color: var(--primary-text-color) !important;
+  min-height: 100vh;
+  width: 100%;
 }
 
 .card {

frontend/src/App.jsx

@@ -54,8 +54,8 @@ function App() {
 	    {/* Barcode scanner component */}
 	    <div className="scan" style={{border: '1px solid black'}}>
 		<BarcodeScannerComponent
-		    width={500}
-		    height={500}
+		    width={"100%"}
+		    height={"auto"}
 		    onUpdate={handleScan}
 		    delay={1500} // 1.5 seconds delay between scans
 		/>