Mind/Body widget on 7.1 - Syntax Error on line 1

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Trying to add a Mind/Body widget to a 7.1 template.  When I paste the code generated from Mind/Body into the custom CSS, I get "Syntax Error in Line 1"

Here is the MindBody code I am pasting:

<script src="https://widgets.mindbodyonline.com/javascripts/healcode.js" type="text/javascript"></script>

<healcode-widget data-type="appointments" data-widget-partner="object" data-widget-id="cf9294d0de" data-widget-version="0" ></healcode-widget>

Only CSS works in Custom CSS. What you have there is HTML.

That needs to go in a code block most likely.

Please see also the following.