break to a new line flexbox

1<div class="container">
2  <div class="item"></div>
3  <div class="break"></div> <!-- break -->
4  <div class="item"></div>
5</div>
6
7<style>
8  /* Inserting this collapsed row between two flex items will make 
9     the flex item that comes after it break to a new row */
10  .break {
11	flex-basis: 100%;
12	height: 0;
13  }
14</style>
15

1width: 100%;