Fix box

topics/microbiome/tutorials/dada-16S/tutorial.md

@@ -1052,7 +1052,7 @@ The barplot is hard to read here: many families are in white because the color p
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 > ampvis2 ({% cite Andersen_2018 %}) team suggests [not using stacked bar charts but heatmaps to represent community diversity](http://albertsenlab.org/ampvis2-heatmap/). You can do that in Galaxy as ampvis2 is available as a tool.
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-{: .question}
+{: .comment}
 
 # Conclusion