By default, node content displays the author and date submitted.
This can be enabled in the content type settings.
The format is hardcoded in the node template.
The default date format can be configured in Region and language > Date and time formats.
Drupal sub theme documentation.
New initiative to improve frontend bundling.
Examples for modifying arrays in twig.
Documentation on how css aggregation works.
Drupal css architecture documentation.
Change record for using symfony vardumper with twig dump().
List of elements in Drupal with a set z-index.
Documentation for Single Directory Components module.
Thoughts on how HTTP2 will affect file aggregation.