To self-host your scripts:

Step 1

Download the .js and .css files and upload them to your Squarespace website:

wmWebpageMockupDisplay.css
wmWebpageMockupDisplay.js

Step 2

Copy the two code snippets, and paste them into their designated areas.

The Styles go in the Site Header Code Injection area.

The Javascript goes in the Site Footer Code Injection area.

Step 3

Replace the URL’s "/s/wmWebpageMockupDisplay.css" and "/s/wmWebpageMockupDisplay.js" to match the unique URL’s that Squarespace generates for you.