:left - CSS: Cascading Style Sheets 编辑

The :left CSS pseudo-class, used with the @page at-rule, represents all left-hand pages of a printed document.

/* Selects any left-hand pages when printing */
@page :left {
  margin: 2in 3in;
}

Whether a given page is "left" or "right" is determined by the major writing direction of the document. For example, if the first page has a major writing direction of left-to-right then it will be a :right page; if it has a major writing direction of right-to-left then it will be a :left page.

Note: This pseudo-class can be used to change only the margin, padding, border, and background properties of the page box. All other properties will be ignored, and only the page box, not the document content on the page, will be affected.

Syntax

:left

Examples

Setting a margin for left-hand pages

@page :left {
  margin: 2in 3in;
}

Specifications

Browser compatibility

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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.

See also

• @page
• Other page-related pseudo-classes: :first, :right