Squashed 'code-drop/' changes from 3336eb2..d8169b4

d8169b4 Fix scrolling in firefox

git-subtree-dir: code-drop
git-subtree-split: d8169b48a35e722ee7dbbffbf0832aa4b8ea824b
Merge commit 'e449749a0fa646e2692c4c2caf850e9ccfa4a9af' into gh-pages