Last modified: 2013-09-04 15:06:13 UTC
When clicking "edit" and the interface changes a values representation (e.g. description) into an editable value, the text displayed within that edit box moves. It is not displayed pixel accurately at the same position where it was displayed before entering edit mode. This is not a big issue for editing, but it makes the UI shaky and gives a worse overall user experience.
Use position:relative to adjust for the border, and the same font. Do not use negative margins as that hits a bug in IE.
It is suggested to wait for this bug to be tackled until bug 37771 is done, as the UI is going to change, and we don't want to make people duplicate work.
Verified in Wikidata demo time