Archived Content and Templates

I have now moved all old archived content from my website to this blog, the old pages contain links to the equivalent blog postings. I know the copy-and-paste blog formatting is not very elegant, but it will do.

I was using the standard Blogger “Tic-Tac” template, but the readable area was not wide enough to fit many of the images I embed in articles, and this would either skew the text, or cut of the images.
I found an article with step-by-step instructions on how to widen the “Rounders” template, and I am now using a widened “Rounders 4” template.
I don’t know why all the templates are fixed width, why not dynamically adjust the width based on the available space?
If you know of any wide or dynamic width templates, please let me know.