css js aggregation – Drupal 7 site serves as an aggregated stylesheet

Is there a way to prevent Drupal from providing multiple stylesheets and instead grouping them together? I will look into https://www.drupal.org/project/webpack

I want to avoid as many as possible of the multiple @imports created by the modules. This is because I want to archive my website with wget and want to have fewer stylesheet links to monitor.

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