The preload value of the element's rel attribute lets you declare fetch requests in the HTML's| MDN Web Docs
JavaScript is a programming language that adds interactivity to your website. This happens in games, in the behavior of responses when buttons are pressed or with data entry on forms; with dynamic styling; with animation, etc. This article helps you get started with JavaScript and furthers your understanding of what is possible.| MDN Web Docs
CSS (Cascading Style Sheets) is the code that styles web content. CSS basics walks through what you need to get started. We'll answer questions like: How do I make text red? How do I make content display at a certain location in the (webpage) layout? How do I decorate my webpage with background images and colors?| MDN Web Docs
HTML| html.spec.whatwg.org
The HTTP Referrer-Policy response header controls how much referrer information (sent with the Referer header) should be included with requests. Aside from the HTTP header, you can set this policy in HTML.| MDN Web Docs
One of the key features of web components is the ability to create custom elements: that is, HTML elements whose behavior is defined by the web developer, that extend the set of elements available in the browser.| MDN Web Docs
