I :heart: how we implemented the template selection using screenshot tiles instead of radios (@wesruv ++), but now in #1617 / https://github.com/backdrop/backdrop/pull/1343 where we need to use checkboxes, it doesn't look that good. The light gray border is too subtle IMO:
Here's a couple of different ways how it could look if we for example used https://github.com/backdrop/backdrop/blob/1.x/core/misc/watchdog-ok.png:
Recent comments
A simple way — use Field Group to create a container for fields https://backdropcms.org/project/field_group and CSS Flex оr Grid to alignment.
Layout also for /node/add/ forms?
Yes. The are several ways to do this: Install Mail System and select "Testing" for delivery in admin/config/system/mailsystem Install Maillog / Mail developer...
Prevent Backdrop from sending emails
The short answer is no, you can't theme forms or change their layouts through the UI. There is a ported version of Display Suite, which has a submodule called Display Suite Forms that allows you...
Layout also for /node/add/ forms?