I just received the Safari version 15.0 (16612.1.29.41.4, 16612), which has redesigned the web inspector. I have now lost the ability to collapse part of the Elements Details sidebar. Earlier versions allowed just the CSS styles to be visible and the ability to toggle on/off further details.
This is a poor user experience as it now restricts my viewport size for not only seeing the HTML code but also wrapping the CSS rules so that they become illegible.
How can I toggle off the other half of the details sidebar?