* {
    box-sizing: border-box;
}
#pay_bill_container {
    display: flex;
    flex-direction: column;
}

@media screen and (min-width: 768px) {
    #pay_bill_container {
        flex-direction: row;
    }
}

#pay_bill_container > div:first-child {
    flex-shrink: 0;
    min-width: 15rem;
}

#pay_bill_container > div:nth-child(2) {
    flex-grow: 1;
}

#invoice-wrapper {
    display: flex;
    flex-direction: column;
    gap: 20px;
    border-radius: 5px;
    overflow: auto;
    padding: 1.5rem;
    box-shadow: 0px 0px 20px 5px #00000003;
}
#payment-form {
    display: flex;
    height: 100%;
    align-items: center;
    gap: 10px;
}
#payment-form button,
#payment-form input {
    height: 40px;
}
#payment-form .submit-container,
#payment-form .input-container {
    height: 100%;
    display: flex;
    align-items: end;
}
#payment-form input[type="submit"] {
    padding-left: 20px;
    padding-right: 20px;
}