Editing Pandas Documentation homepage
Trying to improve the user experience and interaction with the webpage.

1.Edited button hover effect.
2. Make links open in new tabs instead of redirect in the current webpage because this may be not good for some people.
3. Added data manipulation note in the introduction section.
Just removing the errors in the first 2 commits. so this is just a change to hover (1) right? cc @datapythonista  > so this is just a change to hover (1) right?
yes
 Thanks @MOHED1224. I think it's fine here, but in general we prefer to not mix PRs with unrelated changes, even if they are small.

@jorisvandenbossche is this hover effect something that should be implemented here, or in the original sphinx theme? This pull request is stale because it has been open for thirty days with no activity. Please update or respond to this comment if you're still interested in working on this. Sorry for the slow reply here

>  is this hover effect something that should be implemented here, or in the original sphinx theme?

At the moment the "custom-button" (and its css) is defined here in pandas, so a hover effect on it is also to be implemented in pandas. 
Although long term we should probably look into replacing it with the buttons provided by sphinx-panels: https://sphinx-panels.readthedocs.io/en/latest/#link-buttons I'm going to close this. @MOHED1224 let's do this properly even if it's small. Can you open an issue with screenshots of the button you think should be improved, with and without your proposed hover. And tag me there, if there is agreement please reopen the PR only with those changes, and nothing else.