Learn more here: https://www.elegantthemes.com/blog/theme-releases/developers-rejoice-introducing-better-code-editing-for-divi

Today we have an exciting update for developers who use custom CSS and custom code in Divi. When building a page in the Divi Builder, every part of every module can be customized using your own CSS rules. In addition, custom code can be added to your page and to various parts of your website using the Divi Theme Options. Today, we are greatly enhancing the code editing experience in Divi with the addition of a full-featured code editor that makes writing and editing code so much easier and enjoyable. Enhancements include syntax highlighting, linting, autocomplete, color picking, multi-line select, search, find and replace and more!