CSS code works in theme’s Customising CSS but not in the child theme

Hi,

I have this code
.anima-stripped-table .main tr:nth-child(even) td {
background-color: rgb(252, 188, 70);
}

It’s for the even rows in the first table on this page:
https://wpg.meditationyoga.in/

When I put it into the theme’s Customising CSS section it works. But when I add it to a child theme it doesn’t. Other codes in the child theme work OK, so it’s configured properly.

How to fix it so that it works in the child theme as well?

Website: wpg.meditationyoga.in