Yes, the example screenshot I posted above is from a structure field with the width of “1/2” applied to the date and time fields within the structure field. But I’m sorry, I forgot that I had added some custom panel css:
I’m not sure if this feature is supported in 2.06 but it is in the 2.1 beta, you can tell Kirby in your config.php to look for a custompanel.css file, e.g.
But just to explain why panel.css is minified: Kirby uses sass to pre-process the CSS. So you can find the plain SASS/CSS at panel/assets/scss and int its components subfolder.