This visualization displays cumulative COVID-19 deaths over time for multiple countries as log-scaled line charts, with a Voronoi overlay enabling hover interactions. The React app loads data from a GitHub-hosted CSV and renders SVG paths using d3.line, d3.scaleLog, and d3.scaleTime. The VoronoiOverlay component leverages d3.Delaunay and d3.voronoi to create interactive cells, while custom XAxis and YAxis components use d3.axisBottom and d3.axisLeft. Gridlines and axis labels are styled via CSS tick rules.