.flex-row{
  display: flex;
  flex-direction: row;
  flex-wrap: wrap;
}
.flex-2-column>*{
  max-width: 50%;
  width: 100%;
}
.flex-3-column>*{
  max-width: 32%;
  width: 100%;
}
.flex-4-column>*{
  max-width: 25%;
  width: 100%;
}
.mid-gap{
  justify-content: space-between;
}
.flex-2-column.mid-gap>*{
  max-width: 47%
}
.flex-row.right{
  justify-content: right;
}
.flex-row.space-even{
  justify-content: space-evenly;
}