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Card layouts are popular on the web, rows and columns of boxes with similar content. CSS grids can help align those cards, but it’s still be hard to line-up content inside the cards – headers and footers that might need more or less room.

That’s why we need “subgrid” – coming in Firefox 71 (Dec 3) and available now in Firefox Nightly. This is a great opportunity to quickly enhance our designs for modern browsers, without losing anything in the browsers without subgrid support.

Dont wait for full browser support to start using subgrids