body {
    height: 100vh;
    margin: 0;
    display: flex;
    justify-content: center;
    align-items: center;
    background-color: #f4f6f8;
    font-family: Arial, sans-serif;
}

.login-form {
    width: 100%;
    max-width: 500px;
    background-color: #ffffff;
    padding: 40px;
    border-radius: 8px;
    box-shadow: 0 4px 10px rgba(0, 0, 0, 0.1);
}
.text-danger {
    font-size: 14px;
    color: #dc3545;
    margin-top: 4px;
}