.form-group.d3forms-paypal {
    text-align: center;
    padding: 0 15px;
    margin: 15px 0;
}
.form-group.d3forms-paypal > .d3forms-paypal-field {
    padding: 15px;
    background: rgba(0,0,0,0.1);
}
.form-group.d3forms-paypal.has-error > .d3forms-paypal-field {
    background: rgba(255, 0, 0, 0.1);
}