move usbimg to media query

styles.css

@@ -62,10 +62,6 @@ footer {
 	text-decoration: none;
 }
 
-#usbimg {
-	width: 256px;
-}
-
 nav {
 	font-size: x-large;
 }
@@ -129,6 +125,10 @@ ol ol ol {
 		place-content: center;
 	}
 
+	#usbimg {
+		width: 256px;
+	}
+
 	main {
 		min-width: 100%;
 		display: flex;