Alerts: 

```jsx
  <div>
       <Alert color="primary">
         This is a primary alert — check it out!
       </Alert>
       <Alert color="secondary">
         This is a secondary alert — check it out!
       </Alert>
       <Alert color="success">
         This is a success alert — check it out!
       </Alert>
       <Alert color="danger">
         This is a danger alert — check it out!
       </Alert>
       <Alert color="warning">
         This is a warning alert — check it out!
       </Alert>
       <Alert color="info">
         This is a info alert — check it out!
       </Alert>
       <Alert color="light">
         This is a light alert — check it out!
       </Alert>
       <Alert color="dark">
         This is a dark alert — check it out!
       </Alert>
 </div>
```

Link Color:

```jsx
  <div>
        <Alert color="primary">
          This is a primary alert with <a href="#" className="alert-link">an example link</a>. Give it a click if you like.
        </Alert>
        <Alert color="secondary">
          This is a secondary alert with <a href="#" className="alert-link">an example link</a>. Give it a click if you like.
        </Alert>
        <Alert color="success">
          This is a success alert with <a href="#" className="alert-link">an example link</a>. Give it a click if you like.
        </Alert>
        <Alert color="danger">
          This is a danger alert with <a href="#" className="alert-link">an example link</a>. Give it a click if you like.
        </Alert>
        <Alert color="warning">
          This is a warning alert with <a href="#" className="alert-link">an example link</a>. Give it a click if you like.
        </Alert>
        <Alert color="info">
          This is a info alert with <a href="#" className="alert-link">an example link</a>. Give it a click if you like.
        </Alert>
        <Alert color="light">
          This is a light alert with <a href="#" className="alert-link">an example link</a>. Give it a click if you like.
        </Alert>
        <Alert color="dark">
          This is a dark alert with <a href="#" className="alert-link">an example link</a>. Give it a click if you like.
        </Alert>
  </div>
```

Additional content:

```jsx
   <div>
        <Alert color="success">
          <h4 className="alert-heading">Well done!</h4>
          <p>
            Aww yeah, you successfully read this important alert message. This example text is going
            to run a bit longer so that you can see how spacing within an alert works with this kind
            of content.
          </p>
          <hr />
          <p className="mb-0">
            Whenever you need to, be sure to use margin utilities to keep things nice and tidy.
          </p>
        </Alert>
   </div>
```


Dismissing:

```jsx
    <Alert color="info" isOpen={this.state.visible} toggle={() => {}}>
           I am an alert and I can be dismissed!
         </Alert>
```