body {
    background: #111;
    color: #ddd;
    font-family: Arial, sans-serif;
}

.container {
    width: 500px;
    margin: 100px auto;
    padding: 30px;
    background: #1d1d1d;
    border-radius: 8px;
}

h1 {
    margin-top: 0;
}

label {
    display: block;
    margin-top: 15px;
}

input {
    display: block;
    width: 100%;
    margin-top: 8px;
    padding: 10px;
    box-sizing: border-box;
    background: #292929;
    border: 1px solid #444;
    color: white;
}

button {
    margin-top: 20px;
    padding: 10px 20px;
    cursor: pointer;
}

.flag {
    margin-top: 30px;
    padding: 10px;
    background: #222;
    border: 1px solid #444;
    font-family: monospace;
    font-size: 18px;
}