CSS Object Model

The browser's in-memory model of the page's CSS, readable from JavaScript.

What is the CSS Object Model (CSSOM)?

The CSSOM is the browser's in-memory version of all the CSS on a page. JavaScript can read and change styles through it.

const styles = getComputedStyle(document.querySelector(".card"));
console.log(styles.padding);   // "16px"

Level: Master · More CSS terms at this level

Updated September 27, 2026