Apply modern form styling to regular forms

modern-form.css

/*---------------------------------------------------------
 Styled Form (replacer "#wppb-register-user-client" with your form ID)
-------------------------------------------------------- */

form#wppb-register-user-client input:not([type="submit"]),
form#wppb-register-user-client select,
form#wppb-register-user-client textarea {
    height: 72px;
    padding: 3.2rem 2rem 1rem 2rem !important;
}

form#wppb-register-user-client textarea { height: 150px; }

form#wppb-register-user-client select {
    background-position: calc(100% - 15px) 40px;
}

form#wppb-register-user-client label {
    position: relative;
    line-height: 1;
    padding: 0 20px;
    cursor: pointer;
    z-index: 500;
    letter-spacing: 0.2px !important;
    transform: translateY(28px);
}