Problem

Many blocks need to adjust responsively depending on the screen size. Right now block developers are baking in these controls into the block inspector. Let's make sure we provide a unified way to achieve this action.

Solution

Think through ways in which we might implement responsive controls for specific blocks.

Questions

1. Which should be the default setting for blocks? Desktop, mobile, tablet?
2. Is it necessary to hide/show blocks based on device width?
3. Where should the controls go?
4. Does the theme, the block templates, or the content have precedence when designing mobile styles?

Related to #13203

Issue #13203 is about an overall responsive layout option. This particular issue is focused more on individual block responsive controls.