Add region between header and main content
Summary
Add a region between the Header and the Main Content that has 100% width.
Implementation
check https://www.drupal.org/docs/theming-drupal/adding-regions-to-a-theme
1) Define the new region
Regions in Drupal are defined in info.yml
file. Define a region between header and content called "Pre main content"
premaincontent: "Pre Main Content"
2) Create the region in the template
The change should be done in page.html.twig
and more specifically before main
and after header
(https://gitlab.cern.ch/web-team/drupal/public/d8/themes/cern/-/blob/master/templates/layout/page.html.twig#L203). The section should be a div
that holds full width (hence col-sm-12
)