::part
A selector used inside a Shadow DOM that allows you to style specific internal pieces of a web component from the outside (the 'global' CSS).
Syntax
/* Usage Example */
my-custom-component::part(button) {
/* Styles the ';button' part exposed by the web component's shadow tree */
background: var(--brand-color);
border-radius: 8px;
}::part Browser support
Widely available
Since
2020 95% global usage
This feature is well established and works across many devices and browser versions. It has been available across browsers since 2020.
73+
72+
13.1+
79+
Your first month is free
Managed WordPress hosting for faster sites.
Learn more