body {
    display: flex;
    justify-content: center;
    align-items: center;
    height: 100vh;
    margin: 0;
    font-family: Arial, sans-serif;
}
.lock-container {
    text-align: center;
    padding: 20px;
    border: 1px solid #ccc;
    border-radius: 5px;
}
.error {
    color: red;
}
.success {
    color: green;
}
.change-password-form {
    display: none;
    margin-top: 20px;
}