.btn-danger, .navbar-drk {
    background-color: #b70000 !important;
    border-color: #b70000 !important;
}
.btn-danger:hover {
    background-color: #960000 !important;
    border-color: #960000 !important;
}
.card {
    border-radius: 1rem;
}
input:focus, .form-control:focus {
    border-color: #b70000;
    box-shadow: 0 0 0 0.2rem rgba(183,0,0,.25);
}