LiveView 1.2 introduces colocated CSS and scoped styling for Elixir UIs
Phoenix LiveView 1.2 lets you write CSS directly inside HEEx templates and automatically scopes it using the new @scope rule. This eliminates separate stylesheet files and prevents style leakage between components, speeding up UI development for Elixir web apps. Existing LiveView 1.1 apps upgrade with a single mix.exs version bump.