I solved my own problem.
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In order to go back up a level, I had to insert an empty text column (β>>β) which makes sense considering doing the same (β>β) when starting a new column.

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This code did the trick. It reduces the amount of space for all the content, but then I had to add some below the title.
.callout .callout-content > * {
margin-top: 2px !important;
margin-bottom: 2px !important;
}
/* Add space below the callout title */
.callout .callout-title {
margin-bottom: 8px !important;
}
Attached the final result.
Best,
LFT


