body {
    font-family: Arial, sans-serif;
}
.container {
    width: 300px;
    margin: 0 auto;
    padding: 20px;
    border: 1px solid #ccc;
    background-color: #f4f4f4;
}
.container h2 {
    text-align: center;
}
.container input[type="text"],
.container input[type="password"] {
    width: 100%;
    padding: 10px;
    margin-bottom: 10px;
    border: 1px solid #ccc;
    box-sizing: border-box;
}
.container input[type="submit"] {
    width: 100%;
    padding: 10px;
    background-color: #4caf50;
    border: none;
    color: #fff;
    cursor: pointer;
}
.container input[type="submit"]:hover {
    background-color: #45a049;
}