My current project is a PHP-based boilerplate for websites called LampForge.
The current predicament is to create a layout that is fully responsive and utilizes CSS-Grid first if it is supported by the browser, and switches to Flexbox if it is not. I have been fairly successful with working with both CSS Grid and Flexbox so far.
The layout generally has been created, and I have endeavored to use semantic HTML throughout the main document.
The next process to complete is to include media queries and make the design responsive, and to refactor the CSS grid and Flexbox code to create an identical layout without any unnecessary properties in the CSS.
I also plan to implement SASS in this boilerplate, and use PHP to turn each part of the layout into modules. Once this is all completed I think I can consider LampForge completed.