I intended for a border. I can see when I exported it, it does actually look like a blurred line or a gradient when you zoom in heh.

This is the CSS Sketch generated:

```css
background: #213B59;
box-shadow: 0px 1px 1px 0px rgba(255,255,255,0.25);
```

so I'd just use a `border-botttom` - that seems to look good to me.

sorry for the confusion. I do appreciate your attention to detail, that's for sure!