I'm also trying to modify the login layout and not sure where this can be accomplished. I would like to increase the login window so it fits the entire screen (illustration attached). When I was modifying it with the "Inspect Element (Q)" on FireFox, I also see that will have to relocate the logging window and REGISTER FOR AN ACCOUNT TODAY display more towards the center. A side note, I'm using the bold_material as a Layout Style in the Menu configuration. Also need to remove the toolbar as well.
Where do I find the section where I can modify this?