How can i increase the width of the phone box

Dears

I have 9 boxes for the phone, those boxes are very small however all other boxes are ok

How can i increase there width? so that when entering any data the whole values appear

Hi b.m.ezzat, 

Thanks for contacting us.

To adjust the width of the phone box in your form, just inject the following CSS:

.mask-phone-number.form-textbox {

width: 150px !important;

}

To inject CSS code in your form, just follow instructions below.

Do let us know if you need further assistance.

Regards.