# Hubspot Embed Code HubSpot doesn’t support custom elements, so you will have to **use our compatibility mode** version of the embed code in place of the normal 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 spiffy URL for the checkout you are embedding. ###### Compatibility Mode ```

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