Steps to replicate the issue (include links if applicable):
- Open the Vector skin in IE11 or other browser without CSS grid.
What happens?:
- There is no table of contents
What should have happened instead?:
Tthe table of contents narrow screen mode work here
QA steps
- Using a grade C browser without CSS grid (e.g. IE11) make sure the table of contents is accessible on the page.
Developer notes
- We can use @support { display: grid } for the other tweaks