/.../site-packages/_pytest/nodes.py:356: PytestUnknownMarkWarning: Unknown pytest.mark.selenium - is this a typo? You can register custom marks to avoid this warning - for details, see https://docs.pytest.org/en/stable/how-to/mark.html
marker_ = getattr(MARK_GEN, marker)
Fix this warning seen in the test run:
Following the linked docs page.