CSS-in-JS provides a syntax for turning your JavaScript into styles the browser can apply. Regardless of the framework you use, the result will look something like Listing 1. Listing 1.

CSS: Enter CSS to be applied to the HTML used in your tests. It is placed between <style> elements in the header portion of the page. HTML: This area allows you to enter HTML to be used in your tests.

Dive into the world of CSS pseudo-elements! Learn how to use ::before and ::after to add stylistic content without altering your HTML. Perfect for adding icons, decorative elements, or custom ...

Learn HTML and CSS online for free, and use them to create webpages or move up in your career. ... MDN Web Docs is a good option for self-starters because it’s more text- and image-based.