body {
    background-color: #00002a !important;
    color: #fff !important;
}

.center-middle {
    position: absolute;
    left: 50%;
    top: 50%;
    transform: translate(-50%, -50%);
}

.btn-primary, .btn-primary:active {
    background-color: #149dcc!important;
    border-color: #149dcc!important;
    color: #fff!important;
}