Is it just me, or can't you close the big pop-in welcome info box on firefox ?
I had the same reaction and I think you are not supposed to close it. Just go Menu -> Print (Ctrl+P) and you will see it without the box.
alt Hacker News
I had the same reaction and I think you are not supposed to close it. Just go Menu -> Print (Ctrl+P) and you will see it without the box.