Bootstrap alert component.

```jsx
import { useState } from "react";

function AlertExample() {
    const [alert, setAlert] = useState(true);
    if (alert)
        return (
            <Alert type="warning" onDismiss={() => setAlert(false)}>
                Some warning out there!
            </Alert>
        );
    return (
        <button className="btn btn-secondary" onClick={() => setAlert(true)}>
            Show alert again
        </button>
    );
}
<AlertExample />;
```