Steps to Reproduce
- Navigate to https://en.wikipedia.org/api/rest_v1/page/mobile-html/In_the_Air_Tonight on a desktop browser
- Resize the width of the window between ~ 300px and > ~ 1000px
Expected Results
Infobox header always matches infobox
Actual Results
Infobox header remains full width when infobox is only partial width
Environments Observed
- Safari 12.0.3 on macOS 10.14.3