Q:

How to disable autodesk-forge mouseHover on panel

I'm trying to add some CSS on a forge panel.
Whenever I put my mouse hover a forge panel the colour of the background become darker. 
Is it possible to disable this behaviour? 
Edited: 
Here picture of my problem
My mouse was hover the panel titled 2.
I want the background to stay like the panel 1.

A:

This problem doesn't appear in the last version of the forge viewer. I'm gooing to upgrade my viewer

