CSS 属性 inset-inline 定义了元素的逻辑行首和行末偏移，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 {{CSSXref("writing-mode")}}、{{CSSXref("direction")}} 和 {{CSSXref("text-orientation")}} 所定义的值，此属性对应于 {{CSSXref("top")}} 和 {{CSSXref("bottom")}}，或者 {{CSSXref("right")}} 和 {{CSSXref("left")}} 属性。

{{InteractiveExample("CSS Demo: inset-inline")}}

```css interactive-example-choice inset-inline: 5% 10%; writing-mode: horizontal-tb;

```css interactive-example-choice
inset-inline: 10px 40px;
writing-mode: vertical-rl;

```css interactive-example-choice inset-inline: 5% 10%; writing-mode: horizontal-tb; direction: rtl;

```html interactive-example
<section id="default-example">
  <div class="example-container">
    <div id="example-element">I am absolutely positioned.</div>
    <p>
      As much mud in the streets as if the waters had but newly retired from the
      face of the earth, and it would not be wonderful to meet a Megalosaurus,
      forty feet long or so, waddling like an elephantine lizard up Holborn
      Hill.
    </p>
  </div>
</section>

```css interactive-example .example-container { border: 0.75em solid #ad1457; padding: 0.75em; text-align: left; position: relative; width: 100%; min-height: 200px; }

example-element {

background-color: #07136c; border: 6px solid #ffa000; color: white; position: absolute; inset: 0; }

## 属性构成

此属性为下列 CSS 属性的简写属性：

- {{CSSXref("inset-inline-end")}}
- {{CSSXref("inset-inline-start")}}

## 语法

```css
/* 长度值 */
inset-inline: 3px 10px;
inset-inline: 2.4em 3em;
inset-inline: 10px; /* 应用于行首和行末 */

/* 包含块的宽度或高度的百分比 */
inset-inline: 10% 5%;

/* 关键词值 */
inset-inline: auto;

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

取值

inset-inline 属性的取值与 {{CSSXref("left")}} 属性相同。

形式定义

{{CSSInfo}}

形式语法

{{CSSSyntax}}

示例

设置行首和行末偏移

HTML

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

CSS

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

.exampleText {
  writing-mode: vertical-lr;
  position: relative;
  inset-inline: 20px 50px;
  background-color: #c8c800;
}

结果

{{EmbedLiveSample("设置行首和行末偏移", 140, 140)}}