index.md

---
title: Pseudo-class
slug: Glossary/Pseudo-class
page-type: glossary-definition
---

{{GlossarySidebar}}

In CSS, a **pseudo-class** selector targets elements depending on their state rather than on information from the document tree. For example, the selector {{cssxref(":visited", "a:visited")}} applies styles only to links that the user has already followed.

## See also

-[Pseudo-class documentation](/en-US/docs/Web/CSS/Pseudo-classes)