=== Steps to reproduce
# Visit https://en.m.wikipedia.org/wiki/Barack_Obama
# Open developer tools to easily eye the screen dimensions
# Change the browser window size to 999px {F16898448}
# Increase the width to 1000px {F16898450}
# Increase the width to 1107px {F16898452}
# Increase the width to 1108px {F16898454}
=== Expected results
- No horizontal scrollbar is necessary for a large window
=== Actual results
- The horizontal scrollbar pops in and out as different CSS breakpoints are hit
=== Environments observed
- enwiki
**Browser Version: **
- Chromium v65.0.3325.181
**OS Version:**
- Ubuntu v17.10 64b
**Device Model:**
- Desktop
**Device Language:**
- English
=== Notes
When I scroll a little ways past #Cultural_and_political_image, the horizontal scrollbar disappears. Maybe this is an issue with lazy loading placeholders?