feat: update HTML structure and add logo for Weather App; remove unused SVG from WeatherCard

frontend/src/components/WeatherForm.tsx

@@ -48,16 +48,7 @@ const WeatherCard: React.FC = () => {
   return (
     <div className="w-full max-w-lg mx-auto bg-white/80 rounded-2xl shadow-xl p-8 mt-8">
       <h2 className="text-3xl font-bold mb-4 text-blue-700 flex items-center gap-2">
-        <svg
-          className="w-8 h-8 text-blue-400"
-          fill="none"
-          stroke="currentColor"
-          strokeWidth="2"
-          viewBox="0 0 24 24"
-        >
-          <path d="M3 12a9 9 0 0118 0A9 9 0 013 12z" />
-        </svg>
-        Weather Card
+        Weather
       </h2>
       <p className="mb-2 text-gray-600">
         Current weather will be displayed here.