Answer
A pseudo-class matches an element based on state or structural information. • Examples include `:hover`, `:focus-visible`, and `:checked`. • Structural pseudo-classes include `:first-child` and `:nth-child()`. • Pseudo-classes do not create new document elements.
💡 Simple Example
button:focus-visible {
outline: 3px solid royalblue;
}
⚡ Quick Revision
Pseudo-classes select existing elements in a particular state or position.