Move last element to next line in a flex container

Question

I have this structure in my HTML code:

<div style="display:flex">
    <div class="div_first">1</div>
    <div class="div_second">2</div>
    <div class="div_third">3</div>
    <div class="div_next_line">
      <div class="div_first">4</div>
      <div class="div_second">5</div>
      <div class="div_third">6</div>
    </div>
</div>

Is it possible to have 4 5 6 in second line with the same columns as 1 2 3, like so:

1    2    3
4    5    6

The structure of the HTML code cannot be changed.

Answer 1

Apply flex-wrap to the container.

Apply flex: 1 0 33% to the first three child divs.

To the fourth div apply flex-basis: 100%; display: flex.

To the children of the fourth div apply flex: 1 0 33%.

The idea is to force the fourth item to wrap, then have its children replicate the behavior of the children in the primary container.