# ClickFunnels 2.0 Embed Code ClickFunnels doesn’t support custom elements, so you will have to **use our “compatibility mode**” version of the checkout embed code. [**How to Set Up Compatibility Mode**](https://university.spiffy.co/styling-customization/embedding-checkouts.md#compatibility-mode) Use the compatibility mode embed snippet below, and swap out the URL to your checkout. ###### Compatibility Mode ```

``` Learn more about compatibility mode in our [developer documentation](https://developers.spiffy.co/spiffyjs/elements#checkouts).