Can't change default borderWidht of select html element.

[Manubi]

Hi,
my tailwind config:

My problem is that the border of the select element is thicker on focus compared to the inpnut fields.

       ` <select
                className="w-full mt-1 form-select"
                name="countryCode"
            />`

<input name="phonenumber" className="w-full mt-1 form-input" />

Thanks for the help!