Where to add Custom CSS to disable textarea resize?

Design help Custom code
4

Here’s the Read Only Link. Sorry for not adding it before.

https://preview.webflow.com/preview/slope-example?utm_medium=preview_link&utm_source=dashboard&utm_content=slope-example&preview=bcd855322dd33a39821b0a95399fcd02&workflow=preview

I’m also trying to remove the default iOS webkit styling to text areas but that’s not working either. Thanks for having a look! @Andrew_Coderre @AyePizzaBoy