Add the externalBlue.css style sheet to externalCSS.html by placing a link tag (" ") between the file's opening "" and closing "" tags.

Upload your custom .css file to the AEM server by selecting New > File and browse to the file's location on your local machine. Once uploaded, you will see the .css file in the list of assets in your ...

All you have to do is store your HTML, JavaScript, and CSS files, and then share a link to your starting HTML file. In fact, Google is eating its own dog food by hosting the instructions on how to ...