Build per-series CSS selectors for line and area charts.
Vega renders one path per series within the marks group, in the order the series appear in the compiled data, so we use :nth-child to address each series individually.
path
:nth-child
Build per-series CSS selectors for line and area charts.
Vega renders one
pathper series within the marks group, in the order the series appear in the compiled data, so we use:nth-childto address each series individually.