Follow the steps below to embed your HTML component:
Rename your window-row.html file to index.html
Zip that file (and any other .css or .js files)
Add an embed component to your page by clicking on the + button in the top right corner of your screen and choosing Embed > HTML File
With the embed component selected, click Choose File... in the right side inspector and chose your Zip file.
Your HTML content should show up in the embed component - you can then size it however you like. The HTML content is now embedded in the presentation and can be viewed by all of your users.
For more information on HTML components visit this article: Using an HTML Page.