Minor UI and content inconsistencies on DeepChem.io

[AshwinSaklecha]

Description

I noticed a few small but valid issues on the DeepChem.io website that could improve the consistency and overall user experience. Listing them below for clarity:

1. Footer:
   • Update copyright year from 2022 → 2025.
   • Change “Twitter” text to “X”.

2. Homepage – "Used By Scientific Leaders" carousel:
   • When clicking the right arrow the first time, the image moves left (opposite direction).
     After that, it behaves normally.

3. About page – "Companies & Universities Developing DeepChem" carousel:
   • The carousel moves unpredictably — clicking the right arrow sometimes skips or jumps slides irregularly.

4. Tutorials section:

   • The “Back to Top” button appears only in this section. Either make it appear across all sections for uniformity or remove it entirely.

5. Logo:

   • The DeepChem GitHub repository now uses an updated logo, but the website still displays the older one. Suggest updating the site to match the latest logo.

Suggested Fix

If these issues look valid, I would be happy to open a PR addressing them.

Additional Context

These are small front-end and content-level improvements; no major layout changes.
Not sure if this repo is still actively maintained, so please confirm if it's okay for me to proceed with a PR.

[SatyamKumarCS]

Hi! 👋
Thanks for documenting these issues so clearly. All of them look straightforward and I’d be happy to work on the fixes.

May I take this up and have it assigned to me?
I can open a PR soon with the updates to the footer, carousel behavior, tutorials section button, and logo consistency.

Thanks!