body {
    background-color: #f5f5f5;
}

.btn-login {
    background-color: #90EE90;
    border-color: #333;
    color: #333;
}

.btn-login:hover {
    background-color: #7CCD7C;
    color: #333;
}

.btn-login:disabled {
    background-color: #ccc;
    cursor: not-allowed;
}