I will be adding and refining existing features to Firefox Devtools' CSS Grid Inspector tool. One major feature I will be working on is the grid outline tool. This tool allows for developers and designers to interact with a CSS grid layout highlighted by the CSS Grid Inspector. It gives users the ability to visualise grid cells, areas, positioning, and line names in an intuitive way. This feature will be shipped inside the new layout panel with Firefox Developer Tools.
I initially implemented this feature as part of the Undergraduate Capstone Open-Source Program for an applied studies course during the Spring 2017 semester. Although it has come a long way, it still needs polishing.