## Viewport meta tag requirements

In order to provide a great user experience for 3D Secure on all devices,
you should set your page's viewport `width` to `device-width` with the
[viewport meta tag](https://developer.mozilla.org/en-US/docs/Mozilla/Mobile/Viewport_meta_tag).

There are several other viewport settings, and you can configure those
based on your needs. Just make sure you include `width=device-width`
somewhere in your configuration.