Click on the "Hamburger Menu" (three horizontal lines) in the top left of the UI. However, I would still use iframes to embed external pages. Mixed content means that when you have https but your resource is from http. Go to Google Maps and find a map you like. The embed element provides an integration point for an external (typically non-HTML) application or interactive content. Reference: https://developer.mozilla.org/en-US/docs/Web/Security/Mixed_content. After Click on the button: Example 2: This example describes the document.createElement() method to create