Flexbox ——彈性佈局

Flexbox is a layout model for displaying items in a single dimension — as a row or as a column.

彈性佈局是一種基於一維的行和列的佈局模型。

The key feature of flexbox is the fact that items in a flex layout can grow and shrink.

彈性佈局的關鍵特性就是item（項）可以放大和收縮。

Space can be assigned to the items themselves, or distributed between or around the items.

可以給item自己，item之間或周圍，分配空間。

Flexbox also enables alignment of items on the main or cross axis, thus providing a high level of control over the size and alignment of a group of items.

彈性佈局可以在主軸和交叉軸上排列items的尺寸、位置和方向。