.amplify-phonenumberfield select:not(:focus) {
  border-right: none;
}

.amplify-phonenumberfield {
  //here we need to override both the selectfield and textfield variables because the phonenumberfield is composed of both of these
  //the initial value is being pulled from the fieldcontrol values but we cannot set fieldcontrol values here because selectfield and textfield both overwrite those
  --amplify-components-selectfield-color: var(
    --amplify-components-phonenumberfield-color
  );
  --amplify-components-selectfield-border-color: var(
    --amplify-components-phonenumberfield-border-color
  );
  --amplify-components-selectfield-font-size: var(
    --amplify-components-phonenumberfield-font-size
  );
  --amplify-components-selectfield-focus-border-color: var(
    --amplify-components-phonenumberfield-focus-border-color
  );

  --amplify-components-textfield-color: var(
    --amplify-components-phonenumberfield-color
  );
  --amplify-components-textfield-border-color: var(
    --amplify-components-phonenumberfield-border-color
  );
  --amplify-components-textfield-font-size: var(
    --amplify-components-phonenumberfield-font-size
  );
  --amplify-components-textfield-focus-border-color: var(
    --amplify-components-phonenumberfield-focus-border-color
  );
}