/*@mixin block_indent() {
  @return 100px;
}*/
#billboard {
  padding-bottom: 150%;
}
@media screen and (min-width: 992px) {
  #billboard {
    padding-bottom: 40%;
  }
}
#billboard .item {
  padding-bottom: 40px;
}
@media screen and (min-width: 992px) {
  #billboard .item {
    padding-bottom: 4%;
  }
}