div.scale3-12-4 {
  width: calc(3*(100% - 30px) / 12);
  object-fit: contain;
}
div.scale3-6-2 {
  width: calc(3*(100% - 10px) / 6);
  object-fit: contain;
}
div.scale3-9-3 {
  width: calc(3*(100% - 20px) / 9);
  object-fit: contain;
}
div.scale3-3-1 {
  width: calc(3*(100% - 0px) / 3);
  object-fit: contain;
}
div.scale9-22-3 {
  width: calc(9*(100% - 20px) / 22);
  object-fit: contain;
}
div.scale4-22-3 {
  width: calc(4*(100% - 20px) / 22);
  object-fit: contain;
}
div.scale4-13-2 {
  width: calc(4*(100% - 10px) / 13);
  object-fit: contain;
}
div.scale9-13-2 {
  width: calc(9*(100% - 10px) / 13);
  object-fit: contain;
}
div.scale4-17-3 {
  width: calc(4*(100% - 20px) / 17);
  object-fit: contain;
}
div.scale9-17-3 {
  width: calc(9*(100% - 20px) / 17);
  object-fit: contain;
}