Spacing around callout boxes

[mastoffel]

When using callout blocks, there is a really large spacing between the text and the callout, and I'd like to change that. 'm also using .column as I actually want two callouts side by side, which seems to increase the spacing further.
Any help is very much appreciated!

This is some text.

::: {.callout-warning .column collapse="true"}
# a callout
:::

And here my rendered html output:

[mcanouil]

You can modify the callout CSS class.

.callout {
  margin-top: 0; /* 1.25rem by default */
  margin-bottom: 0; /* 1.25rem by default */
}

PS: could you change the category from "General" to "Q&A"? (you have to use the desktop view of GitHub webpage to do that)

[mastoffel]

Great, thanks!