*{margin:0;padding:0;box-sizing:border-box}body{font-family:Arial,sans-serif;background-color:#f5f5f5;display:flex;justify-content:center;align-items:center;min-height:100vh;padding:20px}.app{background:white;padding:20px;border-radius:8px;box-shadow:0 2px 10px #0000001a;width:100%;max-width:400px;text-align:center}.app h1{margin-bottom:20px;color:#333}.app form{display:flex;flex-direction:column;gap:10px}.app input{padding:10px;border:1px solid #ddd;border-radius:4px}.app button{padding:10px;background:#007bff;color:#fff;border:none;border-radius:4px;cursor:pointer}.app button:hover{background:#0056b3}.error{color:red;margin-top:10px}.weather-info{margin-top:20px;padding:10px;background:#f9f9f9;border-radius:4px}@media (max-width: 600px){.app{padding:15px}}