postcss-gap-properties is a PostCSS plugin that adds gap, row-gap, and column-gap properties to any element, regardless of the display property. It automatically generates the necessary CSS grid or flexbox code to create consistent visual spacing, even in older browsers or those with incomplete grid/flexbox support. This plugin simplifies responsive layout design by ensuring reliable gap behavior across various browsers and contexts. It reduces boilerplate and helps maintain cleaner, more manageable stylesheets.