Support mobile layout of nervos.org's roadmap page

[Keith-CY]

The roadmap page was drafted by a foundation member because there was a bottleneck in the original designer.

The draft is as follows

It only covers the layout for desktop, so we need to add a draft for mobile correspondingly.

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This issue comes from https://github.com/Magickbase/nervos-official-website/issues/175

[Kirl70]

Is there Figma or any design resources available for the desktop version? To maintain consistency with other pages, it would be best to provide design resources from Figma and the details for the mobile version of other pages.

[Keith-CY]

Is there Figma or any design resources available for the desktop version? To maintain consistency with other pages, it would be best to provide design resources from Figma and the details for the mobile version of other pages.

Sure, the figma is available at https://www.figma.com/file/fMWK8ZGROCdfOa7nmmUDHz/Nervos.org-R4?type=design&node-id=5215-842&mode=design&t=l8TPNURExQFSvHEy-0

[Kirl70]

The mobile design draft for this page: https://www.figma.com/file/6XNoimRDbFTTNm016rbIdU/Magickbase?type=design&node-id=19500%3A40379&mode=design&t=2axernEJb7BQfUsP-1