How to close the Spacemacs install log window

After installing Spacemacs, you'll see two windows:

The top has menu options and shows what packages were installed. The bottom has detailed package install information.

The first thing I do is hit the spacebar, which brings up a menu:

The menu shows you what shortcuts are available. Let's choose w (window):

Now choose j to move to the bottom window:

Now, let's close the window with SPACE w c.

Next: How do I open a file in Spacemacs?