web/public/css/payment.css

body {
    font-family: 'Poppins', sans-serif;
    background-color: #1b1c1e;
}

.nav-color {
    background-color: #212226;
}

.card {
    position: center;
    margin: auto;
    text-align: center;
    border-radius: 20px;
    background-color: #212226;
}

.icon {
    position: center;
    margin: auto;
    width: 70%;
    height: 70%;
}

@media screen and (max-width: 766px) {
    .card h2 {
        font-size: 7vw;
    }

    .card h5 {
        font-size: 5vw;
    }

    .navbar-brand {
        width: 11vw;
        height: 11vw;
    }

}

@media screen and (min-width: 767px) {
    .card h2 {
        font-size: 4vw;
    }

    .card h5 {
        font-size: 2vw;
    }

    .navbar-brand {
        width: 8vw;
        height: 8vw;
    }

}

@media screen and (min-width: 993px) {
    .card h2 {
        font-size: 3vw;
    }

    .card h5 {
        font-size: 1.3vw;
    }

    .navbar-brand {
        width: 6vw;
        height: 6vw;
    }

}

@media screen and (min-width: 1400px) {
    .card h2 {
        font-size: 4vw;
    }

    .card h5 {
        font-size: 2vw;
    }

    .navbar-brand {
        width: 6vw;
        height: 6vw;
    }
}

.btn {
    position: center;
    margin: auto;
    text-align: center;
    border-bottom-left-radius: 20px;
    border-bottom-right-radius: 20px;
    border-top-left-radius: 20px;
    border-top-right-radius: 20px;
    background-color: #212226;
}

.card-body {
    text-align: left;
}

.border {
    text-align: center;
}

.btn-Transaction {
    width: 50%;
    background-color: darkred;
    border-color: darkred;
    border-radius: 100px;
}

.btn-Transaction:hover {
    background-color: red;
    border-color: red;
}