Widget to overlap each other

You have to put the fixed widget at the last. If not, it will overlapped all of widget below it.

Hello,

The fixed widget is the last.
It is overlapping the previous widgets.

Can you take a screenshot? It sound like margin or CSS problem.

There it is the overlapping widget in red.
https://www.tecnologiaegadgets.com/wp-content/uploads/2015/10/Overlapping-widget.png

same issue here. I have the last 2 widgets fixed using this plugin but the top one overlaps the second one only when scrolling up.