How can I change the color of country picker widget?

I am a beginner user. I am using a theme for my form which all form elements follow but I can't seem to find a way to have the country picker widget follow the same colors.

I tried this code in the widget own CSS but did not work

input {

  background-color: #3e3e3e !important;

}

here is a link to the form:

https://form.jotform.com/210796024477460

Hi hatimkhalifa, thank you for reaching us.

Kindly try to add the following code instead:

.form-control { background-color: #3E3E3E; }

Please give it a try and let us know how it goes.

Yes it did. Thank you very much Jessica