How to get the picklist- rendered as radio buttons placed horizontally ?

KVin, change your CSS class to be this so that it is saying “within the .paymentMethod field, change the css of all .nx-radiowrapper areas to be something different”

.paymentMethod .nx-radiowrapper {
   display: inline-block;
   min-width: 11em;
}

I’d adjust the min-width to get it to be wide enough to fit the full picklist value on one line.