:left
A selector used inside the @page rule to target the physical 'left' pages of a double-sided printed document.
Quick example
@page :left {
/* Adds a wider margin to the left (spine) side of the page when printing */
margin-right: 4cm;
margin-left: 2cm;
}:left Browser Support
Limited availability94% global usage
This feature is not Baseline because it does not work in some of the most widely-used browsers.
Not ready for production without a fallback.
18+
6+
12+