Remove sub-label below birthday widget and add default value

How Do I remove sub-label below birthday widget and add default value in the field or add dd-month-year to save space. 

See screenshot.

Inject the following code as shown on this guide: https://www.jotform.com/help/117-How-to-Inject-Custom-CSS-Codes 

#sublabel_day,#sublabel_month,#sublabel_year{

    display: none !important;

}

The Birth Date Picker widget does not have the option to add a default value. If you want to add a default value, you would need to use the Date Picker field instead:

Let us know if you have more questions, we will be glad  to assist you.