How to set form's expiration date based on the date field of form?

i just tried the steps above and the day still shows ups.  Can you help me with what I am doing wrong?

Hello jataya,

Please inject the following custom css code in your form to hide the day field:

input#day_13

{

    display : none;

}

label#sublabel_day{

display : none;

}

span.date-separate {

    display: none;

}

Please check the screenshot below how to inject custom css code:  https://www.jotform.com/help/117-How-to-Inject-Custom-CSS-Codes 

Hope this helps.

Do get back to us if you have any questions.

Thank you!