Github user sardell commented on the issue:
https://github.com/apache/metron/pull/956
Normalize is included with Bootstrap, so it isnât necessary to add it
again as an NPM dependency. You can see it being imported in the metron-alerts
application [on this
line](https://github.com/apache/metron/blob/master/metron-interface/metron-alerts/src/vendor.scss#L31).
We should be doing something similar in metron-config in a new PR.---
