Looks really nice. I have 2 comments though, hope you don't mind. First of all my internet is fucking slow, so the background image loads in in chunks. Waiting for the new image to download before swapping it in, would probably make it look a lot better for people with slow internet that uses it on a secondary monitor.

I also find the spacing on the blockheight numbers to be too wide on wider displays. This can make it a lot harder to read. I understand if you don't agree, this is about taste, and not a clear improvement.