[Feature]: Add cards to Podmans feature section

### Consisely describe the feature.

These feature section have same background color as the website color . So this is not making any good impression to user so add proper section to each feature like some different background color , border , responsiveness

### Upload screenshots

### LLM Policy

- [x] This issue is human-written, and folow up comments will also be human-written

Start by locating the Podman feature section shown in the attached screenshot and inspect its existing styling and responsive behavior. Update the section presentation with a distinct background or border and responsive layout, then verify that each feature section is visually separated and usable across screen sizes.

Written by the indexing model from the issue text.