Wrap your entire site (or just an area that has the area you want to capture) in
<div style="overflow:auto;"></div>
If the gasket setting is not suitable for you, try the above. I did not want to install the add-on, because the field at the bottom of the boxes is the standard way to make room for the next window when the data is dynamic, and I do not know if it will be.
Fields will not βleakβ into the overflow field, so this fixes the problem in Chrome, allowing this last box to have a marker inside the new overflow: auto div.
This change is not significant for other browsers, which in any case blocked this margin. I tested in IE 8 and above for regressions from this side and did not find any.
source share