On upgrade, blog category listing is now skewed due to new CSS

Since upgrading to 3.1.0-rc2, instead of side-by-side display of article contents, everything is now displayed in a single column. How can I get this back to my previous display?

For example:

dansmith.ca/index.php/categories

as i see item are in 2 columns maybe i don't understand your question

The front and back images of the coins used to be side-by-side, now they are vertical, as are each of the informational fields below them. This happened since the upgrade and I don't know how to change it back. I'm not talking about the page layout columns, this is all about the articles themselves.

you need to update your css, category.less i mean
remove width value in #flexicontent .lineinfo .element

That worked, but I don't understand why I had to change the coding? I never had to do this before. Will this be addressed in the next release, or will I have to keep changing it with each release?

What happens if I change my template from Blog to another type? Will I have to change the css again?

Hello

that default CSS has changed,
we do want default CSS to work as much as possible without issues

please link to the specific page that you had the issue with the new CSS

i would like to re-apply this CSS in my local browser view via browser tools to see the effect