How do I change the height of the form field for credit card info?

How do I change the height of the form field for credit card info? When numbers are entered, they are cut off.

You may add this custom CSS to increase the height of your fields.

.square-hosted-fields{
min-height: 30px;
}

https://www.jotform.com/help/117-How-to-Inject-Custom-CSS-Codes

Please give it a try and let us know if you need further assistance.