How to remove the 'Area Code' on phone number field?

Hi

How do I remove the 'Area Code' on phone number file dso it is just one phone number entry field?

https://eu.jotform.com/build/90667825022357

Please open your Form Builder, then click the Form Designer icon. Go to the CSS tab, and make sure there's a closing curly bracket " } " on line 38 as shown on the image below:

After the 38th line, inject this CSS code below:

#input_18_area{

    display: none;

}

#sublabel_area{

    display: none;

}

.form-sub-label-container{

    padding-left: 0px !important;

}

If you need a guide for how you can do it, see this link: How-to-Inject-Custom-CSS-Codes.