body {
            font-family: Arial, sans-serif;
            display: flex;
            flex-direction: column;
            align-items: center;
            justify-content: center;
            height: 100vh;
            margin: 0;
            background-color: #f4f4f4;
        }
        #container {
            text-align: center;
            background: white;
            padding: 20px;
            border-radius: 10px;
            box-shadow: 0 0 10px rgba(0, 0, 0, 0.1);
        }
        input, button {
            padding: 10px;
            margin: 10px;
            font-size: 16px;
        }
        img {
            margin-top: 20px;
        }