Add descriptive section for search portal homepage

[Netacci]

Fixes

• Fixes [Feature] Create a CC Search About Page, or Descriptive Section #175 by @PreciousOritsedere

Description

This pull request adds a descriptive section to the homepage of the search portal. The section provides an overview of the search functionality and highlights the use of Creative Commons licenses. The descriptive text is added to the index.html file, and the styles for this section were applied using the appropriate design system colors, adhering to the style guide.

The descriptive text used was suggested by the issue author @PreciousOritsedere here. It's open to review and can be updated.

Technical details

• The new section was inserted in the index.html file above the form section.
• Styling was done in the style.css file using existing color schemes.
• Responsive design considerations were made to ensure the section looks good on various screen sizes.

Tests

• Navigate to the homepage
• Verify that the new descriptive section appears correctly and above the form
• Ensure that the section is responsive on smaller screens

Screenshots

Before

After

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

For the purposes of this DCO, "license" is equivalent to "license or public domain dedication," and "open source license" is equivalent to "open content license or public domain dedication."

Developer Certificate of Origin

Developer Certificate of Origin
Version 1.1

Copyright (C) 2004, 2006 The Linux Foundation and its contributors.
1 Letterman Drive
Suite D4700
San Francisco, CA, 94129

Everyone is permitted to copy and distribute verbatim copies of this
license document, but changing it is not allowed.


Developer's Certificate of Origin 1.1

By making a contribution to this project, I certify that:

(a) The contribution was created in whole or in part by me and I
    have the right to submit it under the open source license
    indicated in the file; or

(b) The contribution is based upon previous work that, to the best
    of my knowledge, is covered under an appropriate open source
    license and I have the right under that license to submit that
    work with modifications, whether created in whole or in part
    by me, under the same open source license (unless I am
    permitted to submit under a different license), as indicated
    in the file; or

(c) The contribution was provided directly to me by some other
    person who certified (a), (b) or (c) and I have not modified
    it.

(d) I understand and agree that this project and the contribution
    are public and that a record of the contribution (including all
    personal information I submit with it, including my sign-off) is
    maintained indefinitely and may be redistributed consistent with
    this project or the open source license(s) involved.

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