Can I have more than one field on a line? How?

For instance:

For Address I would like City, State and Zip on one line

Inside of this guide, you can find how to position fields inside of the form:

Form Field Positioning

However, this will not work for City, State and Zip fields of the address field. To position them on one line you will have to use custom CSS. 

How to Inject Custom CSS Codes

You can provide us an ID of your form and we will help you to position them on one line. 

I created a demo form: https://form.jotformpro.com/72221546849966 

To position City, State and Zip fields in the same line I added this CSS code to the form:

#input_3_city.form-textbox.form-address-city {

    width : 92px !important;

}

#input_3_state.form-textbox.form-address-state {

    width : 92px !important;

    position : absolute;

    margin-left : -200px !important;

    margin-top : -13px !important;

}

#sublabel_3_state.form-sub-label {

    position : absolute;

    margin-top : 15px !important;

    margin-left : -200px !important;

}

#input_3_postal.form-textbox.form-address-postal {

    width : 92px;

    position : absolute;

    margin-left : 217px !important;

    margin-top : -53px !important;

}

#sublabel_3_postal.form-sub-label {

    position : absolute;

    margin-left : 217px !important;

    margin-top : -24px !important;

}

How to Inject Custom CSS Codes

Hope this will help.