open-consul/ui-v2/app/styles/components/consul-service-instance-list.scss

.consul-service-instance-list > ul {
  @extend %consul-service-instance-list;
}
%consul-service-instance-list > li:not(:first-child) {
  @extend %consul-service-instance-row;
}
%consul-service-instance-row {
  @extend %composite-row;
}