Prevent horizontal scroll bars in Firefox

Use inline block and width to force truncation of the flow topics

Bug: 69563
Change-Id: I62fc95a58dbdf0f21e36e67e1941e4e35585e2d2
Hygiene: clean up messy less file

Change-Id: I8c76e92b8a4d79cd26ac7ed54c20bdae54e0b5bd
Merge "Prevent horizontal scroll bars in Firefox"
Merge "Hygiene: clean up messy less file"