.form-select-custom {
    width: auto;
}

@media (min-width: 768px) {
    .form-select-custom {
        width: 100%;
        margin-right: 1rem;
    }
}

@media (max-width: 767px) {
    .btn-custom {
        width: 100%;
    }

    .col-md-6-port {
        width: 30%;
    }

    .col-md-6-proxy {
        width: 70%;
    }
}