Hide Data points (2nd child) & Center Legends

Chart Type - Column Combination Dual Axis

2 measures (line) in one axis and another KF (bar) is in the other axis.

I could hide Data points for one of the line measure using the below CSS code;

g.v-m-main g.v-m-plot g.v-axis1 g.v-marker:nth-child(1).v-datapoint.v-morphable-datapoint {visibility:hidden;}

Help 1:

Why the below code is not working for 2nd child?

g.v-m-main g.v-m-plot g.v-axis1 g.v-marker:nth-child(2).v-datapoint.v-morphable-datapoint {visibility:hidden;}

Help 2:

Please provide CSS to center Chart Legends. If there is a way to sequence Legend order, please provide that aswell.

Will be of great help, if anyone could assist me on these.

Thank you for the support

VeeKay