Unless new evidence comes to bear that refutes the basic tenets of the analysis, Rails 7.0 will aim to give you a default setup based on import maps, and leave the Webpacker approach as an optional alternative.
Let's say, you want to share some page specific data from your website to some social media platforms and maybe messengers. The Web Share API give web developers the power to use the native share mechanisms, that we all know from native applications (e.g. if you click the share button in Safari on the bottom center).
Review the four best supported CSS math functions, and see how they can be used in both practical and unexpected ways, such as within gradients and color functions and in combination with CSS custom properties.