CSS Container Queries are finally here
Responsive design is no longer about the viewport width. It's about the parent container context. How to use `@container` today.
Component-owned responsiveness
A 'Card' component acts differently in a sidebar vs a main grid. Media queries forced us to care about the screen. Container queries let the component say 'If I have less than 300px, stack vertical'. This makes components truly portable.
Syntax basics
`container-type: inline-size` on the parent, and `@container (min-width: 400px)` on the child. It's that simple, and browser support is now green across major versions.
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