# Viewport & Responsive Basics — HTML

Source: https://www.geekswithgeeks.com/en/html/html-viewport-responsive

> The single tag that makes mobile layouts work.

## The viewport tag

This tells mobile browsers to match the CSS layout to the device's actual screen width.

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

## Without it, zoomed out

Skip this tag and mobile browsers render a fake wide desktop page, then shrink it — tiny, zoomed-out text.