CSS Grid Layout is a web-standard layout system used to define a grid structure of rows and columns in CSS. HTML elements can then be distributed to the resulting grid cells to achieve a flexible and predictable layout. This layout system is highly capable, but using it requires a shift away from the mental models of the past. When the grid definition itself is not visible (only its effects on the
![Introducing CSS Grid Inspector](https://cdn-ak-scissors.b.st-hatena.com/image/square/27c1a4d1d9085357e61ace7d6e3cfff34d0e140c/height=288;version=1;width=512/https%3A%2F%2Fwebkit.org%2Fwp-content%2Fuploads%2Fjazz-demo-light.png)