body {
    font-family: Arial, sans-serif;
    margin: 0;
    padding: 0;
    background-color: #f4f4f4;
}
.header, .footer {
    background-color: #333;
    color: #fff;
    text-align: center;
    padding: 1em 0;
}
.container {
    max-width: 400px;
    margin: 50px auto;
    background-color: #fff;
    padding: 20px;
    box-shadow: 0 0 10px rgba(0, 0, 0, 0.1);
}
.container h2 {
    margin-top: 0;
}
.container input[type="text"],
.container input[type="password"] {
    width: 100%;
    padding: 10px;
    margin: 10px 0;
    border: 1px solid #ccc;
    border-radius: 4px;
}
.container input[type="submit"] {
    width: 100%;
    padding: 10px;
    background-color: #4CAF50;
    color: #fff;
    border: none;
    border-radius: 4px;
    cursor: pointer;
}
.container input[type="submit"]:hover {
    background-color: #45a049;
}