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https://www.tohoho-web.com/css/prop/grid-area.htm
CSS - grid-area - とほほのWWW入門
css gridarea
https://gridbyexample.com/examples/example4/
Line-based placement shorthand - grid-area
line based placementgrid areashorthand
https://developer.mozilla.org/en-US/docs/Web/CSS/Reference/Properties/grid-area
grid-area CSS property - CSS | MDN
The grid-area CSS shorthand property specifies a grid item's size and location within a grid by contributing a line, a span, or nothing (automatic) to its grid...
css property mdngrid area