CSS 逻辑属性与值 - CSS（层叠样式表） 编辑

CSS 逻辑属性与值是 CSS 的一个模块，其引入的属性与值能做从逻辑角度控制布局，而不是从物理、方向或维度来控制。

The module also defines logical properties and values for properties previously defined in CSS 2.1. Logical properties define direction‐relative equivalents of their corresponding physical properties.

block 与 inline

Logical properties and values use the abstract terms block and inline to describe the direction in which they flow. The physical meaning of these terms depends on the writing mode.

Block dimension

The dimension perpendicular to the flow of text within a line, i.e., the vertical dimension in horizontal writing modes, and the horizontal dimension in vertical writing modes. For standard English text, it is the vertical dimension.

Inline dimension

The dimension parallel to the flow of text within a line, i.e., the horizontal dimension in horizontal writing modes, and the vertical dimension in vertical writing modes. For standard English text, it is the horizontal dimension.

参考

大小属性

• block-size
• inline-size
• max-block-size
• max-inline-size
• min-block-size
• min-inline-size

外边距 、边框与内边距属性

• border-block
• border-block-color
• border-block-end
• border-block-end-color
• border-block-end-style
• border-block-end-width
• border-block-start
• border-block-start-color
• border-block-start-style
• border-block-start-width
• border-block-style
• border-block-width
• border-color (logical keyword)
• border-inline
• border-inline-color
• border-inline-end
• border-inline-end-color
• border-inline-end-style
• border-inline-end-width
• border-inline-start
• border-inline-start-color
• border-inline-start-style
• border-inline-start-width
• border-inline-style
• border-inline-width
• border-start-start-radius
• border-start-end-radius
• border-end-start-radius
• border-end-end-radius
• border-style (logical keyword)
• border-width (logical keyword)
• margin (logical keyword)
• margin-block
• margin-block-end
• margin-block-start
• margin-inline
• margin-inline-end
• margin-inline-start
• padding (logical keyword)
• padding-block
• padding-block-end
• padding-block-start
• padding-inline
• padding-inline-end
• padding-inline-start

浮动与定位属性

• clear (inline-end and inline-start keywords)
• float (inline-end and inline-start keywords)
• inset
• inset-block
• inset-block-end
• inset-block-start
• inset-inline
• inset-inline-end
• inset-inline-start

其他属性

• caption-side (inline-end and inline-start keywords)
• overflow-block
• overflow-inline
• overscroll-behavior-block
• overscroll-behavior-inline
• resize (block and inline keywords)
• text-align (end and start keywords)

已弃用属性

• offset-block-end (now inset-block-end )
• offset-block-start (now inset-block-start )
• offset-inline-end (now inset-inline-end )
• offset-inline-start (now inset-inline-start )

指南

• Basic concepts of logical properties and values
• Logical Properties for sizing
• Logical Properties for margins, borders and padding
• Logical Properties for floating and positioning

规范

浏览器兼容熊

In general:

• Firefox has support for the mapped properties — where there is a direct mapping from the physical to the logical version.
• Chrome, from version 69, has support for the mapped properties.
• Edge, from version 79, has the same support as Chrome.
• Firefox 66 introduces support for two value shorthands, also behind a flag in Chrome.
• Internet Explorer has no support.

See the individual property pages for full compatibility information.