fix/responsive about page and small fix in vortex position

[GasparMutti]

I increment the about container max width and delete the container padding, also change the vortex position "absolute" for "fixed".

Before:
https://github.com/user-attachments/assets/b7e03460-228a-4206-9792-e671f30db6c9

After:
https://github.com/user-attachments/assets/9c2e1d54-7d4d-4ca8-868b-3b7a6637e3a6

It's a pleasure to contribute

[vercel]

@GasparMutti is attempting to deploy a commit to the bluesparx's projects Team on Vercel.

A member of the Team first needs to authorize it.

[Bluesparx]

Hi Gaspar, really appreciate the effort but someone else is already assigned to work on the same issue (#81 ). Please only work on issues that you are assigned to. You can check out other issues that are open to work upon from -https://github.com/Bluesparx/raga/issues

[GasparMutti]

Sorry its my first contribution ☺️