It should be obvious but it seems that people need a reminder.
You should only ever download files from their original source!! If you don't how will you ever be certain that what you are downloading is the real deal and doesnt have some hidden backdoor.
Not long ago a new version of wordpress was released at www.wordpresz.org which wasn't actually the real deal.
Don't fall into the same trap!.
The web was meant to be read, not squished.
This isn't the way to test a responsive design.