Depending on the structure, you might have a look at flexbox. Is the content that's inside the article contained by an element on its own? Something like this I mean:
<article>
<div> ... content for left column... </div>
<div> ... content for right column... </div>
</article>
If so, you should be fine. A code example like a Codepen would help though :)
On how to use flexbox, check this article by CSS-Tricks: css-tricks.com/snippets/css/a-guide-to-flexbox
Robert van der Elst
Front End Designer