How to break line in a flex layout?

I have solved this by:

.flex-container{
    display:flex;
    flex-direction:column;
    /* how you want your lines */
    text-align:center;
}

<div class="flex-container">
    <p>Line1</p>
    <p>Line2</p>
</div>

You can insert a wide pseudo-element at the right position:

.flex-container {
  display: flex;
  flex-wrap: wrap;
}
.flex-container::after {
  content: '';
  width: 100%;
}
.flex-item:last-child { /* or `:nth-child(n + 4)` */
  order: 1;
}
<div class="flex-container">
  <div class="flex-item">1</div>
  <div class="flex-item">2</div>
  <div class="flex-item">3</div>
  <div class="flex-item">4</div>
</div>

Tags:

Html

Css

Flexbox