Popup link to part of a page? (hash)

Hi, can you recommend how to do so that you can close the popup when you click on the back arrow in the browser?

http://broplayground.webflow.io/popup-link-to-part-of-a-page-hash

Read-Only: https://preview.webflow.com/preview/broplayground?utm_source=broplayground&preview=199fd3556254ef8e33b2beec09ee2264
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