6; wy += 10) {
                  if (((wx + wy) % 17) < 3) ctx.fillRect(wx, wy, 2, 4);
                }
              }
              ctx.fillStyle = color;
            }
            x += bw + 4;
          }
          ctx.fillRect(0, baseline, w, canvas.clientHeight - baseline);
        }

        function drawRaindrops() {
          ctx.strokeStyle = 'rgba(148,163,184,0.25)';
          ctx.lineWidth = 1;
          ctx.beginPath();
          for (const r of state.rainLines) {
            ctx.moveTo(r.x, r.