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• 句法
• 形式定义
• 形式句法
• 范例
• 规范
• 浏览器兼容性
• 另请参阅
• 相关话题

这是 实验性技术
检查 浏览器兼容性表格 要小心谨慎在生产中使用这之前。

size CSS at-rule descriptor, used with the @page at-rule, defines the size and orientation of the box which is used to represent a page. Most of the time, this size corresponds to the target size of the printed page if applicable.

Size may either be defined with a "scalable" keyword (in this case the page will fill the available dimensions) or with absolute dimensions.

句法

/* Keyword values for scalable size */
size: auto;
size: portrait;
size: landscape;
/* <length> values */
/* 1 value: height = width */
size: 6in;
/* 2 values: width then height */
size: 4in 6in;
/* Keyword values for absolute size */
size: A4;
size: B5;
size: JIS-B4;
size: letter;
/* Mixing size and orientation */
size: A4 portrait;
					

值

auto

The user agent decides the size of the page. In most cases, the dimensions and orientation of the target sheet are used.

landscape

The content of the page is displayed in landscape mode (i.e. the longest side of the box is horizontal).

portrait

The content of the page is displayed in portrait mode (i.e. the longest side of the box is vertical). This is the default orientation.

<length>

Any length value (see <length> ). The first value corresponds to the width of the page box and the second one corresponds to its height. If only one value is provided, it is used for both width and height.

<page-size>

A5

This matches the standard, ISO dimensions: 148mm x 210mm.

A4

This matches the standard, ISO dimensions: 210mm x 297mm. (most frequently used dimensions for personal printing.)

A3

This matches the standard, ISO dimensions: 297mm x 420mm.

B5

This matches the standard, ISO dimensions: 176mm x 250mm.

B4

This matches the standard, ISO dimensions: 250mm x 353mm.

JIS-B5

This correspond to the JIS standard dimensions: 182mm x 257mm.

JIS-B4

This correspond to the JIS standard dimensions: 257mm x 364mm.

letter

This keyword is a equivalent to the dimensions of letter paper in North America i.e. 8.5in x 11in.

legal

This keyword is a equivalent to the dimensions of legal papers in North America i.e. 8.5in x 14in.

ledger

This keyword is a equivalent to the dimensions of ledger pages in North America i.e. 11in x 17in.

形式定义

相关 at-rule	@page
初始值	auto
计算值	as specified, but with relative lengths converted into absolute lengths

形式句法

<length>{1,2} | auto | [ <page-size> || [ portrait | landscape ] ]
					

范例

Specifying size and orientation

@page {
  size: 4in 6in landscape;
}
					

Nesting inside a @media rule

@media print {
  @page {
    size: 50mm 150mm;
  }
}
					

规范

规范	状态	注释
CSS Paged Media Module Level 3 The definition of 'size' in that specification.	工作草案	初始定义

浏览器兼容性

The compatibility table on this page is generated from structured data. If you'd like to contribute to the data, please check out https://github.com/mdn/browser-compat-data and send us a pull request. 更新 GitHub 上的兼容性数据

	Desktop						Mobile
	Chrome	Edge	Firefox	Internet Explorer	Opera	Safari	Android webview	Chrome for Android	Firefox for Android	Opera for Android	Safari on iOS	Samsung Internet
size descriptor	Chrome 不支持 No	Edge 不支持 No	Firefox 不支持 No	IE 不支持 No	Opera 不支持 No	Safari 不支持 No	WebView Android 不支持 No	Chrome Android 不支持 No	Firefox Android 不支持 No	Opera Android 不支持 No	Safari iOS 不支持 No	Samsung Internet Android 不支持 No

图例

不支持

不支持

另请参阅

• bleed
• marks

元数据

• 最后修改： Jul 22, 2020

相关话题

1. CSS
2. CSS 参考
3. CSS Pages
4. At-Rules

   1. @page
5. 特性

   1. page-break-after
   2. page-break-before
   3. page-break-inside