:first Back

• :first is a CSS pseudo-class selector used to select the first page of a printed document.
• It is used in conjunction with the @page rule which selects all pages in a printed document. So, when used with @page, :first acts kind of like a filter used to select only the first page among all pages.

@page :first {
    /** styles for the first page */
}

Case: distinguished first page

/* All margins set to 2cm */
@page { 
    margin: 2cm;
} 

/* Top margin on first page 10cm */
@page :first {
    margin-top: 10cm;    
}

Note

• In addition to :first, a @page can be used in conjunction with two other pseudo-classes, namely :left and :right, which select the left and right pages in double-sided documents, respectively.
• Styles specified in a :first @page rule override any styles specified in :left and :right @page rules.
• According to rules @page, you can only change some CSS properties:

• All pages are automatically classified by user agents into either the :left or :right pseudo-class. Whether the first page of a document is :left or :right depends on the major writing direction of the root element. For example, the first page of a document with a left-to-right major writing direction would be a :right page, and the first page of a document with a right-to-left major writing direction would be a :left page.
• If a forced break occurs before the first generated box, it is undefined in CSS 2.1 whether :first applies to the blank page before the break or to the page after it.