refactored the html and css for resource page

[Murdock9803]

Fixes

• Fixes Improve the UI/UX design of any Resource page #41 by @C-NikhilKarthik
• Fixes [Bug] Unwanted underlining in the resource page #272 by @Murdock9803

Description

The pull request aims at improving the user interface for resource.html page by making the HTML and CSS semantic and aligned with the vocabulary.

Technical details

The pull request performs the following tasks:

• Refactors the whole code for resource.html page by implementing semantic HTML.
• Improves the styling of the page in styles.css, by utilizing vocabulary.
• makes the page responsive (enhanced the width property), just like the Vocabulary Blog Post Page

Screenshots

The final output for the page looks like this:

Checklist

• My pull request has a descriptive title (not a vague title like Update index.md).
• My pull request targets the default branch of the repository (main or master).
• My commit messages follow best practices.
• My code follows the established code style of the repository.
• I added or updated tests for the changes I made (if applicable).
• I added or updated documentation (if applicable).
• I tried running the project locally and verified that there are no
  visible errors.

Developer Certificate of Origin

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Developer Certificate of Origin

Developer Certificate of Origin
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    have the right to submit it under the open source license
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    of my knowledge, is covered under an appropriate open source
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[Murdock9803]

@possumbilities I have improved the UI for the resource page. Please have a look at the PR.
For now, i have kept the page heading similar to what is implemented in the vocabulary blog post. Please suggest any variations for the heading and whole code changes 🙌