Splitting divs into 2 columns

Question

I have a code like this:

<div class="article-container">
  <div class="article">
    <h3>title1</h3>
    <p>article1</p>
  </div>
  <div class="article">
    <h3>title2</h3>
    <p>article2</p>
  </div>
  <div class="article">
    <h3>title3</h3>
    <p>article3</p>
  </div>
  <div class="article">
    <h3>title4</h3>
    <p>article4</p>
  </div>
</div>

and I want to transform this 1 lined column into 2 columns like this:

I already tried to use this code, but is there any different way to split the div?

.article-container {
  display: flex;
  flex-wrap: wrap;
}

.article {
  flex-grow: 1;
  flex-basis: 50%;
}

.article:after {
  content: "";
  flex: auto;
}

<div class="article-container">
  <div class="article">
    <h3>title1</h3>
    <p>article1</p>
  </div>
  <div class="article">
    <h3>title2</h3>
    <p>article2</p>
  </div>
  <div class="article">
    <h3>title3</h3>
    <p>article3</p>
  </div>
  <div class="article">
    <h3>title4</h3>
    <p>article4</p>
  </div>
</div>

It's different from this other question Split Div Into 2 Columns Using CSS, the "article" arrangement from this question is different. Anyone got the idea?

Answer 1

Nothing wrong with flexbox for this layout.

There's no need to use a pseudo-element.

.article-container {
  display: flex;
  flex-wrap: wrap;
}

.article {
  flex: 0 0 50%;
  padding: 10px;
}

* {
  margin: 0;
  box-sizing: border-box;
}

<div class="article-container">
  <div class="article">
    <h3>title1</h3>
    <p>article1</p>
  </div>
  <div class="article">
    <h3>title2</h3>
    <p>article2</p>
  </div>
  <div class="article">
    <h3>title3</h3>
    <p>article3</p>
  </div>
  <div class="article">
    <h3>title4</h3>
    <p>article4</p>
  </div>
</div>