No More Bullet

It's been a while, but I felt like I should share this one. I've gotten addicted to bullet over the last 6-8 months and need to play slower games to focus on improving again. I tell myself I'm going to play blitz but find myself playing bullet again! Anyways, here was my solution to fix my self-imposed dilemma :D

.lpools > div:nth-of-type(1), .lpools > div:nth-of-type(2) {
display: none;
}

Can you tell more precisely or in other words or closer to UI visible features what this CSS syntax does? is it about pairing offerings per time controls, or preventing you from choosing them? I forgot what .lpools was. Also, i think it might help passer-by lichess member curious about what scripts might do for them have a close look at this way of personalizing lichess.
Thanks for keeping this team active, in the long run. too.