section#mat {
  .mat-bg {
    display: flex;
    flex-direction: column;
    row-gap: var(--row-gap);
    justify-content: center;
    align-items: center;
    .bg-row {
      display: flex;
      column-gap: var(--col-gap);
    }
  }

  .block {
    height: var(--block-height-m);
    width: var(--block-width);
    background-color: gray;
    &.extra {
      margin-inline: calc(var(--block-width) / 2 + var(--col-gap) / 2);
    }
    &.szone {
      height: var(--block-height-s);
    }
  }
}
