@davatron5000 If SCSS is an option, you could use a 'for' loop to increase the animation-delay for each item, like:
$animation-delay: 0.2s;
@for $i from 1 through 10 {
.fancy-list:nth-of-type(#{$i}) {
animation: pew 1s forwards $animation-delay*$i;
}
}