CSS не первый ребенок
.block:not(:first-child) {
background-color: #990000;
}
//if you need to support legacy browsers then follow the below solution
.block {
background-color: #990000; /* applies to every ul */
}
.block:first-child {
background-color: transparent; /* limits the scope of the previous rule */
}
Carnivorous Flamingo