Default Alert
Alerts are available for any length of text, as well as an optional close button. For proper styling, use one of the eight required contextual classes (e.g., .alert-success). For inline dismissal, use the alerts JavaScript plugin.
Link color
Use the .alert-link utility class to quickly provide matching colored links within any alert.
Dismissing
Using the alert JavaScript plugin, it’s possible to dismiss any alert inline. Here’s how:
Icons
Similarly, you can use flexbox utilities and Bootstrap Icons to create alerts with icons. Depending on your icons and content, you may want to add more utilities or custom styles.