body {
    font-family: Arial, sans-serif;
    background: #f2f4f7;
}

.container {
    width: 420px;
    margin: 80px auto;
    background: white;
    padding: 25px;
    border-radius: 10px;
    box-shadow: 0 0 10px #ccc;
}

h1 {
    text-align: center;
}

input, button {
    width: 100%;
    padding: 10px;
    margin-top: 12px;
}

button {
    background: #007bff;
    color: white;
    border: none;
    cursor: pointer;
}

button:hover {
    background: #0056b3;
}

pre {
    margin-top: 20px;
    background: #f8f9fa;
    padding: 10px;
    white-space: pre-wrap;
}