Bootstrap 5 Alerts: Styling and Scenarios for Notification Messages

The Bootstrap 5 Alert component is used to display prompt messages, status feedback, or operation results. It supports multiple styles, animations, and interactive features, and is fully responsive. To use it, you need to first include the Bootstrap 5 CSS and JS files. A basic alert is created using the `alert` class and color theme classes (such as `alert-primary` for blue, `alert-success` for green, etc.). The `alert-dismissible` class can be added to enable a close button, and `fade show` can be used to enable fade-in and fade-out animations. Functionally, the `alert-link` class can unify link colors, and JavaScript can control automatic hiding (e.g., closing after 5 seconds). Typical scenarios include form submission success prompts, deletion operation confirmations, system notifications, etc. For customization, default styles can be overridden via CSS. Mastering color classes, close buttons, animations, and JavaScript interactions allows flexible enhancement of user experience and prompt clarity.