::selection
A pseudo-element that styles the part of a document that has been highlighted by the user (usually by clicking and dragging with the mouse).
Quick example
::selection {
/* Changes the default blue highlight color to your brand color */
background: var(--brand-accent);
color: white;
}::selection Browser Support
Limited availability 84% 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.
1+
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1.1+
12+