> For the complete documentation index, see [llms.txt](https://web-dev-guide.wishtack.io/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://web-dev-guide.wishtack.io/responsive-web-design/viewport.md).

# Viewport

Viewport is the web page's **area visible to the user**.

The `viewport` meta can control the **size and the zoom level** of the view.

```markup
<meta name="viewport" content="...">
```

To **enable responsive features**, we set the `viewport`'s width to the width of the screen.\
Initial zoom level should be set to 1.

```markup
<meta name="viewport" content="width=device-width, initial-scale=1.0">
```