Using the dataset below, build a lease history gantt chart. The X-Axis should be time, with the Y-Axis representing unique "unitName" values. On the gantt chart, each lease is represented by a rectangle, in the row corresponding to the unit. The graph should also highlight the month with the highest aggregated rent.
Please fork this CodePen to submit your result, you may use any HTML/CSS/JS preprocessors or framework you wish.
DO NOT USE A CHARTING/GRAPHING LIBRARY (excluding D3).