A simple React.js project using CDN links. Contains header, footer, menu, and exampels of main/sidebar content.
Using HTML/CSS from the Flexbox example at https://www.w3schools.com/css/tryit.asp?filename=trycss3_flexbox_website2
Open index.html with Firefox if you don't have a local server. If you do have a local server, change Apache root-folders to this project.