feature/add-subtle-scroll-to-top-button/54

[Asheklm6]

Fixes

• Fixes [Feature] Add a scroll-to-top element to UX for longer page contexts #54 by @possumbilities

Description

This PR implements a scroll-to-top button to improve user experience on long pages. The button becomes visible after the user scrolls beyond a certain point on the page and allows them to easily return to the top.

Technical details

The scroll-to-top button is implemented using CSS only, avoiding the need for JavaScript. The button uses position: sticky and appears when the user scrolls 88% of the viewport height. Media queries are used to adapt the button's position and size for smaller screens. No additional JavaScript is required for the button’s behavior.

Tests

Open any page that is longer than the viewport height.
Scroll down the page, and the scroll-to-top button should appear once you reach 88% of the viewport height.

Screenshots

Checklist

• [ x] My pull request has a descriptive title (not a vague title like Update index.md).
• [ x] My pull request targets the default branch of the repository (main or master).
• [x ] My commit messages follow best practices.
• [ x] 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).
• [x ] 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.

[netlify]

✅ Deploy Preview for vocabulary-docs ready!

Name	Link
🔨 Latest commit	10e1de1
🔍 Latest deploy log	https://app.netlify.com/sites/vocabulary-docs/deploys/6717bbc35428960008617162
😎 Deploy Preview	https://deploy-preview-280--vocabulary-docs.netlify.app
📱 Preview on mobile	Toggle QR Code... Use your smartphone camera to open QR code link.

---

To edit notification comments on pull requests, go to your Netlify site configuration.