Back in 2012, Mozilla launched Thimble, an online code editor for teaching the basics of HTML, CSS and JavaScript. Over time, though, things got pretty quiet around the project as other browser ...

Thimble, which is part of Mozilla's recently launched Webmaker project, is meant to help novice users write and edit basic HTML and CSS right in a web-based code editor.

It allows you to edit PHP, HTML, CSS and JavaScript files, and it highlights the syntax and provides hints for tags, functions and their parameters. This editor deals with files that contain mixed ...