Indentation is wrong here. Be sure it's 2 spaces, soft tabs. This snippet also doesn't fully convey the clashing:

```
However, when used within <code>.navbar-nav</code> lists the class is only supported for <code>&lt;button&gt;</code> tags
```

We should make it more explicit that you should not apply button classes to navbar anchors. As it reads now, it makes it sound like buttons in `.navbar-nav` are fully supported and that's not the case. They're not designed to handle that.