[Vuejs]-Loop through parent divs children and close that div and open a new div continuing the loop

You need to use the is-multiline class build into Bulma. Then you don’t have to worry about wrapping lines, they take care of it for you:

<div class="columns is-multiline">

Check out their documentation on how it works.

And here is a working demo: https://codepen.io/egerrard/pen/rqpEEK