Flex-box: Align last row to grid

Question

I have a simple flex-box layout with a container like:

.grid {
  display: flex;
  flex-flow: row wrap;
  justify-content: space-between;
}

Answer 1

A possible solution is to use justify-content: flex-start; on the .grid container, size restrictions on its children, and margins on the appropriate child elements -- depending on the desired number of columns.

For a 3-column grid, the basic CSS would look like this:

.grid {
    display: flex;
    flex-flow: row wrap;
    justify-content: flex-start;
}

.grid > * {
    flex: 0 0 32%;
    margin: 1% 0;
}

.grid > :nth-child(3n-1) {
    margin-left: 2%;
    margin-right: 2%;
}

It's another imperfect solution, but it works.

http://codepen.io/tuxsudo/pen/VYERQJ