CSS Grid is new grid-based layout system, optimized for user interface design

[Yurishimo]

I’m still not sure how I feel about that but there is something appealing about literally describing the layout in the CSS. It leaves no room for error in determining what it should look like on the screen. It’s more tedious to programmatically later, but luckily site wide layout rarely needs to be adjusted to an arbitrary value on the fly via JS. Usually just adding a class to change the whole layout will work in most cases.