Changes made to the textbox field border on the Advanced Designer page not being applied

Can someone explain to me why when I edit the text box border, nothing changes? It still appears the same. It has a fill color but no border color. 

It looks like the textbox style that you are trying to apply to your form is being overridden by the style of its theme.

To make change the color border of the textbox fields in your form, please inject the following CSS codes. — How-to-Inject-Custom-CSS-Codes

.form-textbox, .form-textarea, .form-dropdown {

  border: 1px solid #000 !important;

}

The codes above will give the textbox, drop-down, and textarea fields, in your form a black border.

If you have other questions or concerns, please do not hesitate to let us know.