B4J Tutorial [ABMaterial] Gantt Chart Anyone?

Hi there

For my text challenge, I need a Gantt chart, have looked and looked and came up with this. It's not neat yet and it's not responsive or material what what.

Does anyone have an idea if there is a JavaScript component that is better for this??

The nice part about this here is the strip lines, critical path calculation, holiday addition, and ease of use. The data is flat and self referencing..