Flex布局(Flexible Box)

• 主轴方向 ​flex-direction: row | row-reverse | column | column-reverse;

• ​order: <integer>; 项目排列顺序

• ​如何换行 flex-wrap: nowrap | wrap | wrap-reverse;

• ​flex-grow: <number>; 项目放大比例

• ​主轴方向+如何换行 flex-flow: <flex-direction> <flex-wrap>;

• ​flex-shrink: <number>; 项目缩小比例

• flex-basis: <length> | auto; 基础空间
  

• 主轴对齐方式​ justify-content: flex-start | flex-end | center | space-between | space-around;

• flex: none | [ <'flex-grow'> <'flex-shrink'>? || <'flex-basis'> ]; ​flex属性

• ​交叉轴对齐方式 align-items: flex-start | flex-end | center | baseline | stretch;

• ​align-self: auto | flex-start | flex-end | center | baseline | stretch; 交叉轴对齐方式

• ​多轴对齐方式 align-content: flex-start | flex-end | center | space-between | space-around | stretch;