Feat: pdf showcase mobile

[BastinJafari]

Adjust to pdf showcase to mobile

[netlify[bot]]

✔️ Deploy Preview for jina-showcase ready!

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[github-actions[bot]]

:tada: This PR is included in version 0.2.0 :tada:

The release is available on:

• npm package (@latest dist-tag)
• GitHub release

Your semantic-release bot :package::rocket: