Problem/Motivation
The new theme Olivero doesn't allow table zebra. Therefore distinguish different rows in a table may be difficult. Some others themes like the old Bartik or the new Claro ones do it using odd/even classes through table.html.twig and convenient css rules. Theme Olivero hasn't such table twig. Thus for this theme the default table twig
core/modules/system/templates/table.html.twig,
is used, which does not implement odd/even classes. Moreover the table.css exists for that theme but has no rules for odd/even classes.
Therefore does this lack is intentional or is a forgetfulness? Why an other approach is used for table zebra? Which one is expected instead?
Steps to reproduce
Proposed resolution
Add a table.html.twig file to Olivero theme, like the Claro theme one.
Add a rule for tr.odd in table.pcss.css.
Remaining tasks
Modify table.pcss.css.Add a table.html.twig file to Olivero theme, like the Claro theme one.: not necessary.