Bootstrap 5 Cards: Creating Clean and Attractive Content Display Units

The Bootstrap 5 Card component serves as a "container box" for organizing information neatly, capable of orderly containing content such as images, text, and buttons. It supports responsive layouts to adapt to different devices. The basic structure uses `.card` as the container, with internal classes like `.card-img-top` (top image), `.card-body` (content area containing `.card-title` for titles and `.card-text` for text) to achieve content layering. Core components support various combinations: images can be placed at the top or overlapped with text (using `.card-img-overlay`); lists are presented via `.list-group`; and action buttons can be placed in `.card-footer` or within the card body. In terms of styling and layout, appearance can be adjusted through width control, `shadow-*` utility classes (light/default/dark shadows), and `text-center` (center alignment). For responsive arrangement, `.row` combined with `.row-cols-*` is used to implement multi-column layouts (e.g., 1 column on small screens, 3 columns on medium screens). Precautions: Images must include the `alt` attribute and the `img-fluid` class; avoid duplicate style conflicts; and use spacing utility classes reasonably to prevent content crowding. Cards can efficiently build scenarios like product lists and user profiles, flexibly adapting to content combinations ranging from simple to complex.