Administrators are able to change their account’s logo and login page to better match their branding.
To do so:
1) Navigate the Avatar icon and clicking on Account.
2) Click on the Branding tab.
2) The perforated white boxes denote an area that can be changed. Click inside the box to edit.
Here, you may edit your log in page's background, logo, welcome text, and site title.
(For the background image, a 1920x1080 image is recommended, but under 2mb.)
All changes can be previewed in the right section of the page.
3) Click Save when finished.