# Replaced element

An element like img or video whose content comes from outside CSS.

## What is a **replaced element**?

A **replaced element** is one whose content comes from outside CSS, like an `<img>`, `<video>` or `<iframe>`. CSS sizes the box, but not what's drawn inside it.

```css
img, video { max-width: 100%; height: auto; }
```

Level: Apprentice · [More HTML terms at this level](https://www.ask-codey.com/glossary/subjects/html/apprentice)

Updated: October 16, 2026

Source: https://www.ask-codey.com/glossary/replaced-element