* Update chronos_installation_guide.css
* Update chronos_installation_guide.js
* Update chronos.md
* Change border color
* Deleted test text in '2. Install' title
I changed the title in last commit to check if my build in readthedoc web works fine. Now I delete it.
* Update button css selector
Revised the button selector to avoid influencing other buttons' style on the web.
* Update #cmd height
* Update as pull-request comment required.
1, disable other options when users choose windows, and guide users to https://bigdl.readthedocs.io/en/latest/doc/Chronos/Overview/windows_guide.html in "Install CMD"
2, guide users to https://bigdl.readthedocs.io/en/latest/doc/Chronos/Overview/chronos.html#tensorflow-backend in "Install CMD" when tensorflow is chosen.
3, guide users to https://github.com/intel-analytics/BigDL/tree/main/docker/chronos-nightly in "install CMD" when docker is chosen.
* Update css file to meet the comment requirements
Make the disabled items' background darker to have a better vis experience.
Have a larger fontsize.
* Update js file to meet the comment requirement.
Make the disabled items' background darker to have a better vis experience.
* Update border css settings.
Changed table border settings since last version looks not good.
* Change pmdarima to ARIMA
* Update visuals.
The button now has a hovering style, indicating the user that it can be clicked.