I actually played with the idea a bit.
using the following code
<style>
h6 + p {
margin-right: 20px;
margin-left: 20px;
padding-top: 20px;
padding-right: 20px;
padding-bottom: 20px;
padding-left: 20px;
border-top-left-radius: 3px;
border-top-right-radius: 3px;
border-bottom-left-radius: 3px;
border-bottom-right-radius: 3px;
background-color: rgb(224, 230, 235);
column-count: 2;
column-gap: 1em;
column-rule-color: rgba(0, 0, 0, 0.207843);
column-rule-style: solid;
column-rule-width: 1px;
}
</style>
And by formatting text like this:
http://vincent.polenordstudio.fr/snap/9p651.jpg
I get that result on publish: