Actually Octavia is handling adding columns to this fine somehow

agaric/templates/block/block--content-bottom.html.twig

@@ -1,10 +0,0 @@
-{% extends '@bulma/block/block.html.twig' %}
-{% set view_mode = configuration['view_mode'] ?? null %}
-{% if view_mode is same as ('columnar') %}
-  {%
-    set classes = [
-      'column'
-    ]
-  %}
-  {% set attributes = attributes.addClass(classes) %}
-{% endif %}