Change the border-color

Next-Gen
1

Using Knack Next-Gen, I can’t change the Border color in theme settings. How to do this in CSS?

2

@Casper2 here’s an example -

.kn-list-view {
  background-color: white;
  border: 1px solid #bdc3c7;
  border-radius: 5px;
}

There are other examples here.