inset-block-start

Baseline Widely available *

This feature is well established and works across many devices and browser versions. It’s been available across browsers since September 2021.

* Some parts of this feature may have varying levels of support.

CSS 属性 inset-block-start 定义了元素的块首偏移,并根据元素的书写模式、行内方向和文本朝向对应至实体偏移。根据 writing-modedirectiontext-orientation 所定义的值,此属性对应于 toprightbottomleft 属性。

尝试一下

语法

css
/* 长度值 */
inset-block-start: 3px;
inset-block-start: 2.4em;

/* 包含块的宽度或高度的百分比 */
inset-block-start: 10%;

/* 关键词值 */
inset-block-start: auto;

/* 全局值 */
inset-block-start: inherit;
inset-block-start: initial;
inset-block-start: revert;
inset-block-start: revert-layer;
inset-block-start: unset;

取值

inset-block-start 属性的取值与 left 属性相同。

形式定义

初始值auto
适用元素positioned elements
是否是继承属性
Percentageslogical-height of containing block
计算值same as box offsets: top, right, bottom, left properties except that directions are logical
动画类型a length, percentage or calc();

形式语法

inset-block-start = 
auto |
<length-percentage>

<length-percentage> =
<length> |
<percentage>

示例

设置块首偏移

HTML

html
<div>
  <p class="exampleText">示例文本</p>
</div>

CSS

css
div {
  background-color: yellow;
  width: 120px;
  height: 120px;
}

.exampleText {
  writing-mode: vertical-lr;
  position: relative;
  inset-block-start: 20px;
  background-color: #c8c800;
}

结果

规范

Specification
CSS Logical Properties and Values Level 1
# propdef-inset-block-start
CSS Positioned Layout Module Level 3
# propdef-inset-block-start

浏览器兼容性

Report problems with this compatibility data on GitHub
desktopmobile
Chrome
Edge
Firefox
Opera
Safari
Chrome Android
Firefox for Android
Opera Android
Safari on iOS
Samsung Internet
WebView Android
WebView on iOS
inset-block-start
anchor()
Experimental
anchor-size()
Experimental
auto

Legend

Tip: you can click/tap on a cell for more information.

Full support
Full support
In development. Supported in a pre-release version.
In development. Supported in a pre-release version.
No support
No support
Experimental. Expect behavior to change in the future.
See implementation notes.
Uses a non-standard name.
Has more compatibility info.

参见