Blogging Hell!

Since Blogger updated the design layouts has anyone elses formatting gone nutty?

I can't seem to change font within posts and when I added the video in the last post even the smallest of YouTube's embedding sizes was too big. I don't know if this is just mine or anyone else, so I thought I would ask. Any ideas?

If it's the new formatting I'll probably have to update my blogs image again - annoying since I didn't do it that long ago - so if it's all looking a bit screwy or incredibly dull don't panic, it'll hopefully be for the best.

Thanks muchly for any advise on the issues!